Support Python 3.9 on Windows and package installer on it

The josepy 1.10.0 release deprecated this decorator and [caused the nightly `nopin` test to break](https://dev.azure.com/certbot/certbot/_build/results?buildId=4548&view=logs&j=ce03f7c1-1e3f-5d55-28be-f084e7c62a50&t=597fea95-d44e-53a2-5b71-76ed20bd4dde).

.azure-pipelines/advanced-test.yml

@@ -2,12 +2,13 @@
 trigger:
   # When changing these triggers, please ensure the documentation under
   # "Running tests in CI" is still correct.
-  - azure-test-*
   - test-*
 pr: none
 
-jobs:
-  # Any addition here should be reflected in the advanced and release pipelines.
-  # It is advised to declare all jobs here as templates to improve maintainability.
-  - template: templates/tests-suite.yml
-  - template: templates/installer-tests.yml
+variables:
+  # We don't publish our Docker images in this pipeline, but when building them
+  # for testing, let's use the nightly tag.
+  dockerTag: nightly
+
+stages:
+  - template: templates/stages/test-and-package-stage.yml

.azure-pipelines/advanced.yml

@@ -1,18 +0,0 @@
-# Advanced pipeline for running our full test suite on protected branches.
-trigger:
-  - '*.x'
-pr: none
-# This pipeline is also nightly run on master
-schedules:
-  - cron: "0 4 * * *"
-    displayName: Nightly build
-    branches:
-      include:
-      - master
-    always: true
-
-jobs:
-  # Any addition here should be reflected in the advanced-test and release pipelines.
-  # It is advised to declare all jobs here as templates to improve maintainability.
-  - template: templates/tests-suite.yml
-  - template: templates/installer-tests.yml

.azure-pipelines/main.yml

@@ -1,8 +1,8 @@
-trigger:
-  - master
+trigger: none
 pr:
   - master
   - '*.x'
 
 jobs:
-  - template: templates/tests-suite.yml
+  - template: templates/jobs/standard-tests-jobs.yml
+

.azure-pipelines/nightly.yml

@@ -0,0 +1,18 @@
+# Nightly pipeline running each day for master.
+trigger: none
+pr: none
+schedules:
+  - cron: "30 4 * * *"
+    displayName: Nightly build
+    branches:
+      include:
+      - master
+    always: true
+
+variables:
+  dockerTag: nightly
+
+stages:
+  - template: templates/stages/test-and-package-stage.yml
+  - template: templates/stages/deploy-stage.yml
+  - template: templates/stages/notify-failure-stage.yml

.azure-pipelines/release.yml

@@ -1,13 +1,18 @@
-# Release pipeline to build and deploy Certbot for Windows for GitHub release tags
+# Release pipeline to run our full test suite, build artifacts, and deploy them
+# for GitHub release tags.
 trigger:
   tags:
     include:
       - v*
 pr: none
 
-jobs:
-  # Any addition here should be reflected in the advanced and advanced-test pipelines.
-  # It is advised to declare all jobs here as templates to improve maintainability.
-  - template: templates/tests-suite.yml
-  - template: templates/installer-tests.yml
-  - template: templates/changelog.yml
+variables:
+  dockerTag: ${{variables['Build.SourceBranchName']}}
+
+stages:
+  - template: templates/stages/test-and-package-stage.yml
+  - template: templates/stages/changelog-stage.yml
+  - template: templates/stages/deploy-stage.yml
+    parameters:
+      snapReleaseChannel: beta
+  - template: templates/stages/notify-failure-stage.yml

.azure-pipelines/templates/changelog.yml

@@ -1,14 +0,0 @@
-jobs:
-  - job: changelog
-    pool:
-      vmImage: vs2017-win2016
-    steps:
-      - bash: |
-          CERTBOT_VERSION="$(cd certbot && python -c "import certbot; print(certbot.__version__)" && cd ~-)"
-          "${BUILD_REPOSITORY_LOCALPATH}\tools\extract_changelog.py" "${CERTBOT_VERSION}" >> "${BUILD_ARTIFACTSTAGINGDIRECTORY}/release_notes.md"
-        displayName: Prepare changelog
-      - task: PublishPipelineArtifact@1
-        inputs:
-          path: $(Build.ArtifactStagingDirectory)
-          artifact: changelog
-        displayName: Publish changelog

.azure-pipelines/templates/installer-tests.yml

@@ -1,61 +0,0 @@
-jobs:
-  - job: installer_build
-    pool:
-      vmImage: vs2017-win2016
-    steps:
-      - task: UsePythonVersion@0
-        inputs:
-          versionSpec: 3.7
-          architecture: x86
-          addToPath: true
-      - script: python windows-installer/construct.py
-        displayName: Build Certbot installer
-      - task: CopyFiles@2
-        inputs:
-          sourceFolder: $(System.DefaultWorkingDirectory)/windows-installer/build/nsis
-          contents: '*.exe'
-          targetFolder: $(Build.ArtifactStagingDirectory)
-      - task: PublishPipelineArtifact@1
-        inputs:
-          path: $(Build.ArtifactStagingDirectory)
-          artifact: windows-installer
-        displayName: Publish Windows installer
-  - job: installer_run
-    dependsOn: installer_build
-    strategy:
-      matrix:
-        win2019:
-          imageName: windows-2019
-        win2016:
-          imageName: vs2017-win2016
-    pool:
-      vmImage: $(imageName)
-    steps:
-      - powershell: |
-          $currentVersion = $PSVersionTable.PSVersion
-          if ($currentVersion.Major -ne 5) {
-              throw "Powershell version is not 5.x"
-          }
-        condition: eq(variables['imageName'], 'vs2017-win2016')
-        displayName: Check Powershell 5.x is used in vs2017-win2016
-      - task: UsePythonVersion@0
-        inputs:
-          versionSpec: 3.8
-          addToPath: true
-      - task: DownloadPipelineArtifact@2
-        inputs:
-          artifact: windows-installer
-          path: $(Build.SourcesDirectory)/bin
-        displayName: Retrieve Windows installer
-      - script: |
-          py -3 -m venv venv
-          venv\Scripts\python tools\pip_install.py -e certbot-ci
-        displayName: Prepare Certbot-CI
-      - script: |
-          set PATH=%ProgramFiles(x86)%\Certbot\bin;%PATH%
-          venv\Scripts\python -m pytest certbot-ci\windows_installer_integration_tests --allow-persistent-changes --installer-path $(Build.SourcesDirectory)\bin\certbot-beta-installer-win32.exe
-        displayName: Run windows installer integration tests
-      - script: |
-          set PATH=%ProgramFiles(x86)%\Certbot\bin;%PATH%
-          venv\Scripts\python -m pytest certbot-ci\certbot_integration_tests\certbot_tests -n 4
-        displayName: Run certbot integration tests

.azure-pipelines/templates/jobs/extended-tests-jobs.yml

@@ -0,0 +1,97 @@
+jobs:
+  - job: extended_test
+    variables:
+      - name: IMAGE_NAME
+        value: ubuntu-18.04
+      - name: PYTHON_VERSION
+        value: 3.9
+      - group: certbot-common
+    strategy:
+      matrix:
+        linux-py36:
+          PYTHON_VERSION: 3.6
+          TOXENV: py36
+        linux-py37:
+          PYTHON_VERSION: 3.7
+          TOXENV: py37
+        linux-py38:
+          PYTHON_VERSION: 3.8
+          TOXENV: py38
+        linux-py37-nopin:
+          PYTHON_VERSION: 3.7
+          TOXENV: py37
+          CERTBOT_NO_PIN: 1
+        linux-external-mock:
+          TOXENV: external-mock
+        linux-boulder-v1-integration-certbot-oldest:
+          PYTHON_VERSION: 3.6
+          TOXENV: integration-certbot-oldest
+          ACME_SERVER: boulder-v1
+        linux-boulder-v2-integration-certbot-oldest:
+          PYTHON_VERSION: 3.6
+          TOXENV: integration-certbot-oldest
+          ACME_SERVER: boulder-v2
+        linux-boulder-v1-integration-nginx-oldest:
+          PYTHON_VERSION: 3.6
+          TOXENV: integration-nginx-oldest
+          ACME_SERVER: boulder-v1
+        linux-boulder-v2-integration-nginx-oldest:
+          PYTHON_VERSION: 3.6
+          TOXENV: integration-nginx-oldest
+          ACME_SERVER: boulder-v2
+        linux-boulder-v1-py36-integration:
+          PYTHON_VERSION: 3.6
+          TOXENV: integration
+          ACME_SERVER: boulder-v1
+        linux-boulder-v2-py36-integration:
+          PYTHON_VERSION: 3.6
+          TOXENV: integration
+          ACME_SERVER: boulder-v2
+        linux-boulder-v1-py37-integration:
+          PYTHON_VERSION: 3.7
+          TOXENV: integration
+          ACME_SERVER: boulder-v1
+        linux-boulder-v2-py37-integration:
+          PYTHON_VERSION: 3.7
+          TOXENV: integration
+          ACME_SERVER: boulder-v2
+        linux-boulder-v1-py38-integration:
+          PYTHON_VERSION: 3.8
+          TOXENV: integration
+          ACME_SERVER: boulder-v1
+        linux-boulder-v2-py38-integration:
+          PYTHON_VERSION: 3.8
+          TOXENV: integration
+          ACME_SERVER: boulder-v2
+        linux-boulder-v1-py39-integration:
+          PYTHON_VERSION: 3.9
+          TOXENV: integration
+          ACME_SERVER: boulder-v1
+        linux-boulder-v2-py39-integration:
+          PYTHON_VERSION: 3.9
+          TOXENV: integration
+          ACME_SERVER: boulder-v2
+        nginx-compat:
+          TOXENV: nginx_compat
+        linux-integration-rfc2136:
+          IMAGE_NAME: ubuntu-18.04
+          PYTHON_VERSION: 3.8
+          TOXENV: integration-dns-rfc2136
+        docker-dev:
+          TOXENV: docker_dev
+        le-modification:
+          IMAGE_NAME: ubuntu-18.04
+          TOXENV: modification
+        macos-farmtest-apache2:
+          # We run one of these test farm tests on macOS to help ensure the
+          # tests continue to work on the platform.
+          IMAGE_NAME: macOS-10.15
+          PYTHON_VERSION: 3.8
+          TOXENV: test-farm-apache2
+        farmtest-sdists:
+          PYTHON_VERSION: 3.7
+          TOXENV: test-farm-sdists
+    pool:
+      vmImage: $(IMAGE_NAME)
+    steps:
+      - template: ../steps/tox-steps.yml

.azure-pipelines/templates/jobs/packaging-jobs.yml

@@ -0,0 +1,230 @@
+jobs:
+  - job: docker_build
+    pool:
+      vmImage: ubuntu-18.04
+    strategy:
+      matrix:
+        amd64:
+          DOCKER_ARCH: amd64
+        # Do not run the heavy non-amd64 builds for test branches
+        ${{ if not(startsWith(variables['Build.SourceBranchName'], 'test-')) }}:
+          arm32v6:
+            DOCKER_ARCH: arm32v6
+          arm64v8:
+            DOCKER_ARCH: arm64v8
+    # The default timeout of 60 minutes is a little low for compiling
+    # cryptography on ARM architectures.
+    timeoutInMinutes: 180
+    steps:
+      - bash: set -e && tools/docker/build.sh $(dockerTag) $DOCKER_ARCH
+        displayName: Build the Docker images
+      # We don't filter for the Docker Hub organization to continue to allow
+      # easy testing of these scripts on forks.
+      - bash: |
+          set -e
+          DOCKER_IMAGES=$(docker images --filter reference='*/certbot' --filter reference='*/dns-*' --format '{{.Repository}}')
+          docker save --output images.tar $DOCKER_IMAGES
+        displayName: Save the Docker images
+      # If the name of the tar file or artifact changes, the deploy stage will
+      # also need to be updated.
+      - bash: set -e && mv images.tar $(Build.ArtifactStagingDirectory)
+        displayName: Prepare Docker artifact
+      - task: PublishPipelineArtifact@1
+        inputs:
+          path: $(Build.ArtifactStagingDirectory)
+          artifact: docker_$(DOCKER_ARCH)
+        displayName: Store Docker artifact
+  - job: docker_run
+    dependsOn: docker_build
+    pool:
+      vmImage: ubuntu-18.04
+    steps:
+      - task: DownloadPipelineArtifact@2
+        inputs:
+          artifact: docker_amd64
+          path: $(Build.SourcesDirectory)
+        displayName: Retrieve Docker images
+      - bash: set -e && docker load --input $(Build.SourcesDirectory)/images.tar
+        displayName: Load Docker images
+      - bash: |
+          set -ex
+          DOCKER_IMAGES=$(docker images --filter reference='*/certbot' --filter reference='*/dns-*' --format '{{.Repository}}:{{.Tag}}')
+          for DOCKER_IMAGE in ${DOCKER_IMAGES}
+            do docker run --rm "${DOCKER_IMAGE}" plugins --prepare
+          done
+        displayName: Run integration tests for Docker images
+  - job: installer_build
+    pool:
+      vmImage: vs2017-win2016
+    steps:
+      - task: UsePythonVersion@0
+        inputs:
+          versionSpec: 3.9
+          architecture: x86
+          addToPath: true
+      - script: |
+          python -m venv venv
+          venv\Scripts\python tools\pipstrap.py
+          venv\Scripts\python tools\pip_install.py -e windows-installer
+        displayName: Prepare Windows installer build environment
+      - script: |
+          venv\Scripts\construct-windows-installer
+        displayName: Build Certbot installer
+      - task: CopyFiles@2
+        inputs:
+          sourceFolder: $(System.DefaultWorkingDirectory)/windows-installer/build/nsis
+          contents: '*.exe'
+          targetFolder: $(Build.ArtifactStagingDirectory)
+      - task: PublishPipelineArtifact@1
+        inputs:
+          path: $(Build.ArtifactStagingDirectory)
+          # If we change the artifact's name, it should also be changed in tools/create_github_release.py
+          artifact: windows-installer
+        displayName: Publish Windows installer
+  - job: installer_run
+    dependsOn: installer_build
+    strategy:
+      matrix:
+        win2019:
+          imageName: windows-2019
+        win2016:
+          imageName: vs2017-win2016
+    pool:
+      vmImage: $(imageName)
+    steps:
+      - powershell: |
+          if ($PSVersionTable.PSVersion.Major -ne 5) {
+              throw "Powershell version is not 5.x"
+          }
+        condition: eq(variables['imageName'], 'vs2017-win2016')
+        displayName: Check Powershell 5.x is used in vs2017-win2016
+      - task: UsePythonVersion@0
+        inputs:
+          versionSpec: 3.9
+          addToPath: true
+      - task: DownloadPipelineArtifact@2
+        inputs:
+          artifact: windows-installer
+          path: $(Build.SourcesDirectory)/bin
+        displayName: Retrieve Windows installer
+      - script: |
+          python -m venv venv
+          venv\Scripts\python tools\pipstrap.py
+          venv\Scripts\python tools\pip_install.py -e certbot-ci
+        env:
+          PIP_NO_BUILD_ISOLATION: no
+        displayName: Prepare Certbot-CI
+      - script: |
+          set PATH=%ProgramFiles(x86)%\Certbot\bin;%PATH%
+          venv\Scripts\python -m pytest certbot-ci\windows_installer_integration_tests --allow-persistent-changes --installer-path $(Build.SourcesDirectory)\bin\certbot-beta-installer-win32.exe
+        displayName: Run windows installer integration tests
+      - script: |
+          set PATH=%ProgramFiles(x86)%\Certbot\bin;%PATH%
+          venv\Scripts\python -m pytest certbot-ci\certbot_integration_tests\certbot_tests -n 4
+        displayName: Run certbot integration tests
+  - job: snaps_build
+    pool:
+      vmImage: ubuntu-18.04
+    strategy:
+      matrix:
+        amd64:
+          SNAP_ARCH: amd64
+        # Do not run the heavy non-amd64 builds for test branches
+        ${{ if not(startsWith(variables['Build.SourceBranchName'], 'test-')) }}:
+          armhf:
+            SNAP_ARCH: armhf
+          arm64:
+            SNAP_ARCH: arm64
+    timeoutInMinutes: 0
+    steps:
+      - script: |
+          set -e
+          sudo apt-get update
+          sudo apt-get install -y --no-install-recommends snapd
+          sudo snap install --classic snapcraft
+        displayName: Install dependencies
+      - task: UsePythonVersion@0
+        inputs:
+          versionSpec: 3.8
+          addToPath: true
+      - task: DownloadSecureFile@1
+        name: credentials
+        inputs:
+          secureFile: launchpad-credentials
+      - script: |
+          set -e
+          git config --global user.email "$(Build.RequestedForEmail)"
+          git config --global user.name "$(Build.RequestedFor)"
+          mkdir -p ~/.local/share/snapcraft/provider/launchpad
+          cp $(credentials.secureFilePath) ~/.local/share/snapcraft/provider/launchpad/credentials
+          python3 tools/snap/build_remote.py ALL --archs ${SNAP_ARCH} --timeout 19800
+        displayName: Build snaps
+      - script: |
+          set -e
+          mv *.snap $(Build.ArtifactStagingDirectory)
+          mv certbot-dns-*/*.snap $(Build.ArtifactStagingDirectory)
+        displayName: Prepare artifacts
+      - task: PublishPipelineArtifact@1
+        inputs:
+          path: $(Build.ArtifactStagingDirectory)
+          artifact: snaps_$(SNAP_ARCH)
+        displayName: Store snaps artifacts
+  - job: snap_run
+    dependsOn: snaps_build
+    pool:
+      vmImage: ubuntu-18.04
+    steps:
+      - task: UsePythonVersion@0
+        inputs:
+          versionSpec: 3.8
+          addToPath: true
+      - script: |
+          set -e
+          sudo apt-get update
+          sudo apt-get install -y --no-install-recommends nginx-light snapd
+          python3 -m venv venv
+          venv/bin/python tools/pipstrap.py
+          venv/bin/python tools/pip_install.py -U tox
+        displayName: Install dependencies
+      - task: DownloadPipelineArtifact@2
+        inputs:
+          artifact: snaps_amd64
+          path: $(Build.SourcesDirectory)/snap
+        displayName: Retrieve Certbot snaps
+      - script: |
+          set -e
+          sudo snap install --dangerous --classic snap/certbot_*.snap
+        displayName: Install Certbot snap
+      - script: |
+          set -e
+          venv/bin/python -m tox -e integration-external,apacheconftest-external-with-pebble
+        displayName: Run tox
+  - job: snap_dns_run
+    dependsOn: snaps_build
+    pool:
+      vmImage: ubuntu-18.04
+    steps:
+      - script: |
+          set -e
+          sudo apt-get update
+          sudo apt-get install -y --no-install-recommends snapd
+        displayName: Install dependencies
+      - task: UsePythonVersion@0
+        inputs:
+          versionSpec: 3.8
+          addToPath: true
+      - task: DownloadPipelineArtifact@2
+        inputs:
+          artifact: snaps_amd64
+          path: $(Build.SourcesDirectory)/snap
+        displayName: Retrieve Certbot snaps
+      - script: |
+          set -e
+          python3 -m venv venv
+          venv/bin/python tools/pipstrap.py
+          venv/bin/python tools/pip_install.py -e certbot-ci
+        displayName: Prepare Certbot-CI
+      - script: |
+          set -e
+          sudo -E venv/bin/pytest certbot-ci/snap_integration_tests/dns_tests --allow-persistent-changes --snap-folder $(Build.SourcesDirectory)/snap --snap-arch amd64
+        displayName: Test DNS plugins snaps

.azure-pipelines/templates/jobs/standard-tests-jobs.yml

@@ -0,0 +1,75 @@
+jobs:
+  - job: test
+    variables:
+      PYTHON_VERSION: 3.9
+    strategy:
+      matrix:
+        macos-py36:
+          IMAGE_NAME: macOS-10.15
+          PYTHON_VERSION: 3.6
+          TOXENV: py36
+        macos-py39:
+          IMAGE_NAME: macOS-10.15
+          PYTHON_VERSION: 3.9
+          TOXENV: py39
+        windows-py36:
+          IMAGE_NAME: vs2017-win2016
+          PYTHON_VERSION: 3.6
+          TOXENV: py36-win
+        windows-py39-cover:
+          IMAGE_NAME: vs2017-win2016
+          PYTHON_VERSION: 3.9
+          TOXENV: py39-cover-win
+        windows-integration-certbot:
+          IMAGE_NAME: vs2017-win2016
+          PYTHON_VERSION: 3.9
+          TOXENV: integration-certbot
+        linux-oldest-tests-1:
+          IMAGE_NAME: ubuntu-18.04
+          PYTHON_VERSION: 3.6
+          TOXENV: '{acme,apache,apache-v2,certbot}-oldest'
+        linux-oldest-tests-2:
+          IMAGE_NAME: ubuntu-18.04
+          PYTHON_VERSION: 3.6
+          TOXENV: '{dns,nginx}-oldest'
+        linux-py36:
+          IMAGE_NAME: ubuntu-18.04
+          PYTHON_VERSION: 3.6
+          TOXENV: py36
+        linux-py39-cover:
+          IMAGE_NAME: ubuntu-18.04
+          PYTHON_VERSION: 3.9
+          TOXENV: py39-cover
+        linux-py39-lint:
+          IMAGE_NAME: ubuntu-18.04
+          PYTHON_VERSION: 3.9
+          TOXENV: lint-posix
+        linux-py39-mypy:
+          IMAGE_NAME: ubuntu-18.04
+          PYTHON_VERSION: 3.9
+          TOXENV: mypy-posix
+        linux-integration:
+          IMAGE_NAME: ubuntu-18.04
+          PYTHON_VERSION: 3.8
+          TOXENV: integration
+          ACME_SERVER: pebble
+        apache-compat:
+          IMAGE_NAME: ubuntu-18.04
+          TOXENV: apache_compat
+        apacheconftest:
+          IMAGE_NAME: ubuntu-18.04
+          PYTHON_VERSION: 3.6
+          TOXENV: apacheconftest-with-pebble
+        nginxroundtrip:
+          IMAGE_NAME: ubuntu-18.04
+          PYTHON_VERSION: 3.6
+          TOXENV: nginxroundtrip
+    pool:
+      vmImage: $(IMAGE_NAME)
+    steps:
+      - template: ../steps/tox-steps.yml
+  - job: test_sphinx_builds
+    pool:
+      vmImage: ubuntu-20.04
+    steps:
+      - template: ../steps/sphinx-steps.yml

.azure-pipelines/templates/stages/changelog-stage.yml

@@ -0,0 +1,19 @@
+stages:
+  - stage: Changelog
+    jobs:
+      - job: prepare
+        pool:
+          vmImage: vs2017-win2016
+        steps:
+          # If we change the output filename from `release_notes.md`, it should also be changed in tools/create_github_release.py
+          - bash: |
+              set -e
+              CERTBOT_VERSION="$(cd certbot && python -c "import certbot; print(certbot.__version__)" && cd ~-)"
+              "${BUILD_REPOSITORY_LOCALPATH}\tools\extract_changelog.py" "${CERTBOT_VERSION}" >> "${BUILD_ARTIFACTSTAGINGDIRECTORY}/release_notes.md"
+            displayName: Prepare changelog
+          - task: PublishPipelineArtifact@1
+            inputs:
+              path: $(Build.ArtifactStagingDirectory)
+              # If we change the artifact's name, it should also be changed in tools/create_github_release.py
+              artifact: changelog
+            displayName: Publish changelog

.azure-pipelines/templates/stages/deploy-stage.yml

@@ -0,0 +1,107 @@
+parameters:
+- name: snapReleaseChannel
+  type: string
+  default: edge
+  values:
+  - edge
+  - beta
+
+stages:
+  - stage: Deploy
+    jobs:
+      # This job relies on credentials used to publish the Certbot snaps. This
+      # credential file was created by running:
+      #
+      #   snapcraft logout
+      #   snapcraft login (provide the shared snapcraft credentials when prompted)
+      #   snapcraft export-login --channels=beta,edge snapcraft.cfg
+      #
+      # Then the file was added as a secure file in Azure pipelines
+      # with the name snapcraft.cfg by following the instructions at
+      # https://docs.microsoft.com/en-us/azure/devops/pipelines/library/secure-files?view=azure-devops
+      # including authorizing the file for use in the "nightly" and "release"
+      # pipelines as described at
+      # https://docs.microsoft.com/en-us/azure/devops/pipelines/library/secure-files?view=azure-devops#q-how-do-i-authorize-a-secure-file-for-use-in-a-specific-pipeline.
+      #
+      # This file has a maximum lifetime of one year and the current
+      # file will expire on 2022-07-25 which is also tracked by
+      # https://github.com/certbot/certbot/issues/7931. The file will
+      # need to be updated before then to prevent automated deploys
+      # from breaking.
+      #
+      # Revoking these credentials can be done by changing the password of the
+      # account used to generate the credentials. See
+      # https://forum.snapcraft.io/t/revoking-exported-credentials/19031 for
+      # more info.
+      - job: publish_snap
+        pool:
+          vmImage: ubuntu-18.04
+        variables:
+          - group: certbot-common
+        strategy:
+          matrix:
+            amd64:
+              SNAP_ARCH: amd64
+            arm32v6:
+              SNAP_ARCH: armhf
+            arm64v8:
+              SNAP_ARCH: arm64
+        steps:
+          - bash: |
+              set -e
+              sudo apt-get update
+              sudo apt-get install -y --no-install-recommends snapd
+              sudo snap install --classic snapcraft
+            displayName: Install dependencies
+          - task: DownloadPipelineArtifact@2
+            inputs:
+              artifact: snaps_$(SNAP_ARCH)
+              path: $(Build.SourcesDirectory)/snap
+            displayName: Retrieve Certbot snaps
+          - task: DownloadSecureFile@1
+            name: snapcraftCfg
+            inputs:
+              secureFile: snapcraft.cfg
+          - bash: |
+              set -e
+              snapcraft login --with $(snapcraftCfg.secureFilePath)
+              for SNAP_FILE in snap/*.snap; do
+                tools/retry.sh eval snapcraft upload --release=${{ parameters.snapReleaseChannel }} "${SNAP_FILE}"
+              done
+            displayName: Publish to Snap store
+      - job: publish_docker
+        pool:
+          vmImage: ubuntu-18.04
+        strategy:
+          matrix:
+            amd64:
+              DOCKER_ARCH: amd64
+            arm32v6:
+              DOCKER_ARCH: arm32v6
+            arm64v8:
+              DOCKER_ARCH: arm64v8
+        steps:
+          - task: DownloadPipelineArtifact@2
+            inputs:
+              artifact: docker_$(DOCKER_ARCH)
+              path: $(Build.SourcesDirectory)
+            displayName: Retrieve Docker images
+          - bash: set -e && docker load --input $(Build.SourcesDirectory)/images.tar
+            displayName: Load Docker images
+          - task: Docker@2
+            inputs:
+              command: login
+              # The credentials used here are for the shared certbotbot account
+              # on Docker Hub. The credentials are stored in a service account
+              # which was created by following the instructions at
+              # https://docs.microsoft.com/en-us/azure/devops/pipelines/library/service-endpoints?view=azure-devops&tabs=yaml#sep-docreg.
+              # The name given to this service account must match the value
+              # given to containerRegistry below. "Grant access to all
+              # pipelines" should also be checked.  To revoke these
+              # credentials, we can change the password on the certbotbot
+              # Docker Hub account or remove the account from the
+              # Certbot organization on Docker Hub.
+              containerRegistry: docker-hub
+            displayName: Login to Docker Hub
+          - bash: set -e && tools/docker/deploy.sh $(dockerTag) $DOCKER_ARCH
+            displayName: Deploy the Docker images

.azure-pipelines/templates/stages/notify-failure-stage.yml

@@ -0,0 +1,19 @@
+stages:
+  - stage: On_Failure
+    jobs:
+      - job: notify_mattermost
+        variables:
+          - group: certbot-common
+        pool:
+          vmImage: ubuntu-20.04
+        steps:
+          - bash: |
+              set -e
+              MESSAGE="\
+              ---\n\
+              ##### Azure Pipeline
+              *Repo* $(Build.Repository.ID) - *Pipeline* $(Build.DefinitionName) #$(Build.BuildNumber) - *Branch/PR* $(Build.SourceBranchName)\n\
+              :warning: __Pipeline has failed__: [Link to the build](https://dev.azure.com/$(Build.Repository.ID)/_build/results?buildId=$(Build.BuildId)&view=results)\n\n\
+              ---"
+              curl -i -X POST --data-urlencode "payload={\"text\":\"${MESSAGE}\"}" "$(MATTERMOST_URL)"
+    condition: failed()

.azure-pipelines/templates/stages/test-and-package-stage.yml

@@ -0,0 +1,6 @@
+stages:
+  - stage: TestAndPackage
+    jobs:
+      - template: ../jobs/standard-tests-jobs.yml
+      - template: ../jobs/extended-tests-jobs.yml
+      - template: ../jobs/packaging-jobs.yml

.azure-pipelines/templates/steps/sphinx-steps.yml

@@ -0,0 +1,24 @@
+steps:
+  - bash: |
+      set -e
+      sudo apt-get update
+      sudo apt-get install -y --no-install-recommends libaugeas0
+      FINAL_STATUS=0
+      declare -a FAILED_BUILDS
+      tools/venv.py
+      source venv/bin/activate
+      for doc_path in */docs
+      do
+        echo ""
+        echo "##[group]Building $doc_path"
+        if ! sphinx-build -W --keep-going -b html $doc_path $doc_path/_build/html; then
+          FINAL_STATUS=1
+          FAILED_BUILDS[${#FAILED_BUILDS[@]}]="${doc_path%/docs}"
+        fi
+        echo "##[endgroup]"
+      done
+      if [[ $FINAL_STATUS -ne 0 ]]; then
+        echo "##[error]The following builds failed: ${FAILED_BUILDS[*]}"
+        exit 1
+      fi
+    displayName: Build Sphinx Documentation

.azure-pipelines/templates/steps/tox-steps.yml

@@ -0,0 +1,57 @@
+steps:
+  # We run brew update because we've seen attempts to install an older version
+  # of a package fail. See
+  # https://github.com/actions/virtual-environments/issues/3165.
+  - bash: |
+      set -e
+      brew update
+      brew install augeas
+    condition: startswith(variables['IMAGE_NAME'], 'macOS')
+    displayName: Install MacOS dependencies
+  - bash: |
+      set -e
+      sudo apt-get update
+      sudo apt-get install -y --no-install-recommends \
+        python-dev \
+        gcc \
+        libaugeas0 \
+        libssl-dev \
+        libffi-dev \
+        ca-certificates \
+        nginx-light \
+        openssl
+      sudo systemctl stop nginx
+    condition: startswith(variables['IMAGE_NAME'], 'ubuntu')
+    displayName: Install Linux dependencies
+  - task: UsePythonVersion@0
+    inputs:
+      versionSpec: $(PYTHON_VERSION)
+      addToPath: true
+    # tools/pip_install.py is used to pin packages to a known working version
+    # except in tests where the environment variable CERTBOT_NO_PIN is set.
+    # virtualenv is listed here explicitly to make sure it is upgraded when
+    # CERTBOT_NO_PIN is set to work around failures we've seen when using an older
+    # version of virtualenv. The option "-I" is set so when CERTBOT_NO_PIN is also
+    # set, pip updates dependencies it thinks are already satisfied to avoid some
+    # problems with its lack of real dependency resolution.
+  - bash: |
+      set -e
+      python tools/pipstrap.py
+      python tools/pip_install.py -I tox virtualenv
+    displayName: Install runtime dependencies
+  - task: DownloadSecureFile@1
+    name: testFarmPem
+    inputs:
+      secureFile: azure-test-farm.pem
+    condition: contains(variables['TOXENV'], 'test-farm')
+  - bash: |
+      set -e
+      export TARGET_BRANCH="`echo "${BUILD_SOURCEBRANCH}" | sed -E 's!refs/(heads|tags)/!!g'`"
+      [ -z "${SYSTEM_PULLREQUEST_TARGETBRANCH}" ] || export TARGET_BRANCH="${SYSTEM_PULLREQUEST_TARGETBRANCH}"
+      env
+      python -m tox
+    env:
+      AWS_ACCESS_KEY_ID: $(AWS_ACCESS_KEY_ID)
+      AWS_SECRET_ACCESS_KEY: $(AWS_SECRET_ACCESS_KEY)
+      AWS_EC2_PEM_FILE: $(testFarmPem.secureFilePath)
+    displayName: Run tox

.azure-pipelines/templates/tests-suite.yml

@@ -1,39 +0,0 @@
-jobs:
-  - job: test
-    strategy:
-      matrix:
-        macos-py27:
-          IMAGE_NAME: macOS-10.14
-          PYTHON_VERSION: 2.7
-          TOXENV: py27
-        macos-py38:
-          IMAGE_NAME: macOS-10.14
-          PYTHON_VERSION: 3.8
-          TOXENV: py38
-        windows-py35:
-          IMAGE_NAME: vs2017-win2016
-          PYTHON_VERSION: 3.5
-          TOXENV: py35
-        windows-py37-cover:
-          IMAGE_NAME: vs2017-win2016
-          PYTHON_VERSION: 3.7
-          TOXENV: py37-cover
-        windows-integration-certbot:
-          IMAGE_NAME: vs2017-win2016
-          PYTHON_VERSION: 3.7
-          TOXENV: integration-certbot
-          PYTEST_ADDOPTS: --numprocesses 4
-    pool:
-      vmImage: $(IMAGE_NAME)
-    steps:
-    - bash: brew install augeas
-      condition: startswith(variables['IMAGE_NAME'], 'macOS')
-      displayName: Install Augeas
-    - task: UsePythonVersion@0
-      inputs:
-        versionSpec: $(PYTHON_VERSION)
-        addToPath: true
-    - script: python tools/pip_install.py -U tox coverage
-      displayName: Install dependencies
-    - script: python -m tox
-      displayName: Run tox

.dockerignore

@@ -8,5 +8,4 @@
 .git
 .tox
 venv
-venv3
 docs

.editorconfig

@@ -0,0 +1,18 @@
+# https://editorconfig.org/
+
+root = true
+
+[*]
+insert_final_newline = true
+trim_trailing_whitespace = true
+end_of_line = lf
+
+[*.py]
+indent_style = space
+indent_size = 4
+charset = utf-8
+max_line_length = 100
+
+[*.yaml]
+indent_style = space
+indent_size = 2

.envrc

@@ -0,0 +1,12 @@
+# This file is just a nicety for developers who use direnv. When you cd under
+# the Certbot repo, Certbot's virtual environment will be automatically
+# activated and then deactivated when you cd elsewhere. Developers have to have
+# direnv set up and run `direnv allow` to allow this file to execute on their
+# system. You can find more information at https://direnv.net/.
+. venv/bin/activate
+# direnv doesn't support modifying PS1 so we unset it to squelch the error
+# it'll otherwise print about this being done in the activate script. See
+# https://github.com/direnv/direnv/wiki/PS1. If you would like your shell
+# prompt to change like it normally does, see
+# https://github.com/direnv/direnv/wiki/Python#restoring-the-ps1.
+unset PS1

.github/FUNDING.yml

@@ -0,0 +1 @@
+custom: https://supporters.eff.org/donate/support-work-on-certbot

.github/issue_template.md

@@ -7,7 +7,7 @@ questions.
 ## My operating system is (include version):
 
 
-## I installed Certbot with (certbot-auto, OS package manager, pip, etc):
+## I installed Certbot with (snap, OS package manager, pip, certbot-auto, etc):
 
 
 ## I ran this command and it produced this output:

.github/pull_request_template.md

@@ -1,4 +1,5 @@
 ## Pull Request Checklist
 
 - [ ] If the change being made is to a [distributed component](https://certbot.eff.org/docs/contributing.html#code-components-and-layout), edit the `master` section of `certbot/CHANGELOG.md` to include a description of the change being made.
+- [ ] Add or update any documentation as needed to support the changes in this PR.
 - [ ] Include your name in `AUTHORS.md` if you like.

.gitignore

@@ -4,13 +4,12 @@
 build/
 dist*/
 /venv*/
-/kgs/
 /.tox/
 /releases*/
 /log*
 letsencrypt.log
 certbot.log
-letsencrypt-auto-source/letsencrypt-auto.sig.lzma.base64
+poetry.lock
 
 # coverage
 .coverage
@@ -31,12 +30,6 @@ tags
 # auth --cert-path --chain-path
 /*.pem
 
-# letstest
-tests/letstest/letest-*/
-tests/letstest/*.pem
-tests/letstest/venv/
-tests/letstest/venv3/
-
 .venv
 
 # pytest cache
@@ -58,3 +51,10 @@ parts
 prime
 stage
 *.snap
+snap-constraints.txt
+qemu-*
+certbot-dns*/certbot-dns*_amd64*.txt
+certbot-dns*/certbot-dns*_arm*.txt
+/certbot_amd64*.txt
+/certbot_arm*.txt
+certbot-dns*/snap

.isort.cfg

@@ -1,6 +1,5 @@
 [settings]
 skip_glob=venv*
-skip=letsencrypt-auto-source
 force_sort_within_sections=True
 force_single_line=True
 order_by_type=False

.pylintrc

@@ -8,7 +8,10 @@ jobs=0
 
 # Python code to execute, usually for sys.path manipulation such as
 # pygtk.require().
-#init-hook=
+# CERTBOT COMMENT
+# This is needed for pylint to import linter_plugin.py since
+# https://github.com/PyCQA/pylint/pull/3396.
+init-hook="import pylint.config, os, sys; sys.path.append(os.path.dirname(pylint.config.PYLINTRC))"
 
 # Profiled execution.
 profile=no
@@ -53,7 +56,23 @@ extension-pkg-whitelist=pywintypes,win32api,win32file,win32security
 #    See https://github.com/PyCQA/pylint/issues/1498.
 # 3) Same as point 2 for no-value-for-parameter.
 #    See https://github.com/PyCQA/pylint/issues/2820.
-disable=fixme,locally-disabled,locally-enabled,bad-continuation,no-self-use,invalid-name,cyclic-import,duplicate-code,design,import-outside-toplevel,useless-object-inheritance,unsubscriptable-object,no-value-for-parameter,no-else-return,no-else-raise,no-else-break,no-else-continue
+# 4) raise-missing-from makes it an error to raise an exception from except
+#    block without using explicit exception chaining. While explicit exception
+#    chaining results in a slightly more informative traceback, I don't think
+#    it's beneficial enough for us to change all of our current instances and
+#    give Certbot developers errors about this when they're working on new code
+#    in the future. You can read more about exception chaining and this pylint
+#    check at
+#    https://blog.ram.rachum.com/post/621791438475296768/improving-python-exception-chaining-with.
+# 5) wrong-import-order generates false positives and a pylint developer
+#    suggests that people using isort should disable this check at
+#    https://github.com/PyCQA/pylint/issues/3817#issuecomment-687892090.
+# 6) unspecified-encoding generates errors when encoding is not specified in
+#    in a call to the built-in open function. This relates more to a design decision
+#    (unspecified encoding makes the open function use the default encoding of the system)
+#    than a clear flaw on which a check should be enforced. Anyway the project does
+#    not need to enforce encoding on files so we disable this check.
+disable=fixme,locally-disabled,locally-enabled,bad-continuation,no-self-use,invalid-name,cyclic-import,duplicate-code,design,import-outside-toplevel,useless-object-inheritance,unsubscriptable-object,no-value-for-parameter,no-else-return,no-else-raise,no-else-break,no-else-continue,raise-missing-from,wrong-import-order,unspecified-encoding
 
 [REPORTS]
 
@@ -254,7 +273,7 @@ ignore-mixin-members=yes
 # List of module names for which member attributes should not be checked
 # (useful for modules/projects where namespaces are manipulated during runtime
 # and thus existing member attributes cannot be deduced by static analysis
-ignored-modules=pkg_resources,confargparse,argparse,six.moves,six.moves.urllib
+ignored-modules=pkg_resources,confargparse,argparse
 # import errors ignored only in 1.4.4
 # https://bitbucket.org/logilab/pylint/commits/cd000904c9e2
 

.travis.yml

@@ -1,321 +0,0 @@
-language: python
-dist: xenial
-
-cache:
-    directories:
-        - $HOME/.cache/pip
-
-before_script:
-  # On Travis, the fastest parallelization for integration tests has proved to be 4.
-  - 'if [[ "$TOXENV" == *"integration"* ]]; then export PYTEST_ADDOPTS="--numprocesses 4"; fi'
-  # Use Travis retry feature for farm tests since they are flaky
-  - 'if [[ "$TOXENV" == "travis-test-farm"* ]]; then export TRAVIS_RETRY=travis_retry; fi'
-  - export TOX_TESTENV_PASSENV=TRAVIS
-  - 'if [[ "$SNAP" == true ]]; then snap/local/build_and_install.sh; fi'
-
-# Only build pushes to the master branch, PRs, and branches beginning with
-# `test-`, `travis-test-`, or of the form `digit(s).digit(s).x` or
-# `vdigit(s).digit(s).digit(s)`. As documented at
-# https://docs.travis-ci.com/user/customizing-the-build/#safelisting-or-blocklisting-branches,
-# this includes tags so pushing tags of the form `vdigit(s).digit(s).digit(s)`
-# will also trigger tests. This reduces the number of simultaneous Travis runs,
-# which speeds turnaround time on review since there is a cap of on the number
-# of simultaneous runs.
-branches:
-  # When changing these branches, please ensure the documentation under
-  # "Running tests in CI" is still correct.
-  only:
-    - master
-    - /^\d+\.\d+\.x$/  # this matches our point release branches
-    - /^v\d+\.\d+\.\d+$/  # this matches our release tags
-    - /^(travis-)?test-.*$/
-
-# Jobs for the main test suite are always executed (including on PRs) except for pushes on master.
-not-on-master: &not-on-master
-  if: NOT (type = push AND branch = master)
-
-# Jobs for the extended test suite are executed for cron jobs and pushes to
-# non-development branches.
-extended-test-suite: &extended-test-suite
-  if: type = cron OR (type = push AND branch != master)
-
-matrix:
-  include:
-    # Main test suite
-    - stage: "Test"
-      python: "2.7"
-      env: ACME_SERVER=pebble TOXENV=integration
-      <<: *not-on-master
-
-    # As documented at
-    # https://docs.travis-ci.com/user/build-stages/#how-to-define-build-stages,
-    # the previous stage will be automatically applied to all subsequent jobs
-    # until a new stage is defined.
-
-    # This job is always executed, including on master
-    - python: "3.8"
-      env: TOXENV=py38-cover FYI="py38 tests + code coverage"
-
-    - python: "3.7"
-      env: TOXENV=lint
-      <<: *not-on-master
-    - python: "3.5"
-      env: TOXENV=mypy
-      <<: *not-on-master
-    - python: "2.7"
-      # Ubuntu Trusty or older must be used because the oldest version of
-      # cryptography we support cannot be compiled against the version of
-      # OpenSSL in Xenial or newer.
-      dist: trusty
-      env: TOXENV='py27-{acme,apache,apache-v2,certbot,dns,nginx}-oldest'
-      <<: *not-on-master
-    - python: "2.7"
-      env: TOXENV=py27
-      <<: *not-on-master
-    - python: "3.5"
-      env: TOXENV=py35
-      <<: *not-on-master
-    - sudo: required
-      env: TOXENV=apache_compat
-      services: docker
-      addons:
-      <<: *not-on-master
-    - sudo: required
-      env: TOXENV=le_auto_xenial
-      services: docker
-      <<: *not-on-master
-    - python: "2.7"
-      env: TOXENV=apacheconftest-with-pebble
-      <<: *not-on-master
-    - python: "2.7"
-      env: TOXENV=nginxroundtrip
-      <<: *not-on-master
-
-    # Extended test suite on cron jobs and pushes to tested branches other than master
-    - sudo: required
-      env: TOXENV=nginx_compat
-      services: docker
-      addons:
-      <<: *extended-test-suite
-    - python: "3.7"
-      env:
-        - TOXENV=travis-test-farm-apache2
-        - secure: "f+j/Lj9s1lcuKo5sEFrlRd1kIAMnIJI4z0MTI7QF8jl9Fkmbx7KECGzw31TNgzrOSzxSapHbcueFYvNCLKST+kE/8ogMZBbwqXfEDuKpyF6BY3uYoJn+wPVE5pIb8Hhe08xPte8TTDSMIyHI3EyTfcAKrIreauoArePvh/cRvSw="
-      <<: *extended-test-suite
-    - python: "3.7"
-      env:
-        - TOXENV=travis-test-farm-leauto-upgrades
-        - secure: "f+j/Lj9s1lcuKo5sEFrlRd1kIAMnIJI4z0MTI7QF8jl9Fkmbx7KECGzw31TNgzrOSzxSapHbcueFYvNCLKST+kE/8ogMZBbwqXfEDuKpyF6BY3uYoJn+wPVE5pIb8Hhe08xPte8TTDSMIyHI3EyTfcAKrIreauoArePvh/cRvSw="
-      git:
-        depth: false  # This is needed to have the history to checkout old versions of certbot-auto.
-      <<: *extended-test-suite
-    - python: "3.7"
-      env:
-        - TOXENV=travis-test-farm-certonly-standalone
-        - secure: "f+j/Lj9s1lcuKo5sEFrlRd1kIAMnIJI4z0MTI7QF8jl9Fkmbx7KECGzw31TNgzrOSzxSapHbcueFYvNCLKST+kE/8ogMZBbwqXfEDuKpyF6BY3uYoJn+wPVE5pIb8Hhe08xPte8TTDSMIyHI3EyTfcAKrIreauoArePvh/cRvSw="
-      <<: *extended-test-suite
-    - python: "3.7"
-      env:
-        - TOXENV=travis-test-farm-sdists
-        - secure: "f+j/Lj9s1lcuKo5sEFrlRd1kIAMnIJI4z0MTI7QF8jl9Fkmbx7KECGzw31TNgzrOSzxSapHbcueFYvNCLKST+kE/8ogMZBbwqXfEDuKpyF6BY3uYoJn+wPVE5pIb8Hhe08xPte8TTDSMIyHI3EyTfcAKrIreauoArePvh/cRvSw="
-      <<: *extended-test-suite
-    - python: "3.7"
-      env: TOXENV=py37 CERTBOT_NO_PIN=1
-      <<: *extended-test-suite
-    - python: "2.7"
-      env: ACME_SERVER=boulder-v1 TOXENV=integration
-      sudo: required
-      services: docker
-      <<: *extended-test-suite
-    - python: "2.7"
-      env: ACME_SERVER=boulder-v2 TOXENV=integration
-      sudo: required
-      services: docker
-      <<: *extended-test-suite
-    - python: "2.7"
-      env: ACME_SERVER=boulder-v1 TOXENV=integration-certbot-oldest
-      # Ubuntu Trusty or older must be used because the oldest version of
-      # cryptography we support cannot be compiled against the version of
-      # OpenSSL in Xenial or newer.
-      dist: trusty
-      sudo: required
-      services: docker
-      <<: *extended-test-suite
-    - python: "2.7"
-      env: ACME_SERVER=boulder-v2 TOXENV=integration-certbot-oldest
-      # Ubuntu Trusty or older must be used because the oldest version of
-      # cryptography we support cannot be compiled against the version of
-      # OpenSSL in Xenial or newer.
-      dist: trusty
-      sudo: required
-      services: docker
-      <<: *extended-test-suite
-    - python: "2.7"
-      env: ACME_SERVER=boulder-v1 TOXENV=integration-nginx-oldest
-      # Ubuntu Trusty or older must be used because the oldest version of
-      # cryptography we support cannot be compiled against the version of
-      # OpenSSL in Xenial or newer.
-      dist: trusty
-      sudo: required
-      services: docker
-      <<: *extended-test-suite
-    - python: "2.7"
-      env: ACME_SERVER=boulder-v2 TOXENV=integration-nginx-oldest
-      # Ubuntu Trusty or older must be used because the oldest version of
-      # cryptography we support cannot be compiled against the version of
-      # OpenSSL in Xenial or newer.
-      dist: trusty
-      sudo: required
-      services: docker
-      <<: *extended-test-suite
-    - python: "3.6"
-      env: TOXENV=py36
-      <<: *extended-test-suite
-    - python: "3.7"
-      env: TOXENV=py37
-      <<: *extended-test-suite
-    - python: "3.5"
-      env: ACME_SERVER=boulder-v1 TOXENV=integration
-      sudo: required
-      services: docker
-      <<: *extended-test-suite
-    - python: "3.5"
-      env: ACME_SERVER=boulder-v2 TOXENV=integration
-      sudo: required
-      services: docker
-      <<: *extended-test-suite
-    - python: "3.6"
-      env: ACME_SERVER=boulder-v1 TOXENV=integration
-      sudo: required
-      services: docker
-      <<: *extended-test-suite
-    - python: "3.6"
-      env: ACME_SERVER=boulder-v2 TOXENV=integration
-      sudo: required
-      services: docker
-      <<: *extended-test-suite
-    - python: "3.7"
-      env: ACME_SERVER=boulder-v1 TOXENV=integration
-      sudo: required
-      services: docker
-      <<: *extended-test-suite
-    - python: "3.7"
-      env: ACME_SERVER=boulder-v2 TOXENV=integration
-      sudo: required
-      services: docker
-      <<: *extended-test-suite
-    - python: "3.8"
-      env: ACME_SERVER=boulder-v1 TOXENV=integration
-      <<: *extended-test-suite
-    - python: "3.8"
-      env: ACME_SERVER=boulder-v2 TOXENV=integration
-      <<: *extended-test-suite
-    - sudo: required
-      env: TOXENV=le_auto_jessie
-      services: docker
-      <<: *extended-test-suite
-    - sudo: required
-      env: TOXENV=le_auto_centos6
-      services: docker
-      <<: *extended-test-suite
-    - sudo: required
-      env: TOXENV=le_auto_oraclelinux6
-      services: docker
-      <<: *extended-test-suite
-    - sudo: required
-      env: TOXENV=docker_dev
-      services: docker
-      addons:
-        apt:
-          packages:  # don't install nginx and apache
-            - libaugeas0
-      <<: *extended-test-suite
-    - stage: "Snap"
-      sudo: required
-      env: SNAP=true TOXENV=integration-external,apacheconftest-external-with-pebble
-      addons:
-        apt:
-          packages:
-          - nginx-light
-        snaps:
-          - name: snapcraft
-            channel: stable
-            confinement: classic
-          - name: lxd
-            channel: stable
-      git:
-        # By default, Travis clones the repo to a depth of 50 commits which can
-        # break the ability to use `git describe` to set the version of the
-        # snap. This setting removes the --depth flag from git commands solving
-        # this problem. See
-        # https://docs.travis-ci.com/user/customizing-the-build#git-clone-depth
-        # for more info.
-        depth: false
-      deploy:
-        # This section relies on credentials stored in a SNAP_TOKEN environment
-        # variable in Travis. See
-        # https://docs.travis-ci.com/user/deployment/snaps/ for more info.
-        # This credential has a maximum lifetime of 1 year and the current
-        # credential will expire on 4/22/2021. The value of SNAP_TOKEN will
-        # need to be updated to use a new credential before then to prevent
-        # automated deploys from breaking. Remembering to do this is also
-        # tracked by https://github.com/certbot/certbot/issues/7931.
-        'on':
-          # Deploy on release tags or nightly runs from any branch. We only try
-          # to deploy from the certbot/certbot repo to prevent errors if forks
-          # of this repo try to run tests.
-          all_branches: true
-          condition: -n $TRAVIS_TAG || $TRAVIS_EVENT_TYPE = cron
-          repo: certbot/certbot
-        provider: snap
-        snap: certbot_*.snap
-        channel: edge
-        # skip_cleanup is needed to prevent Travis from deleting the snaps we
-        # just built and tested. See
-        # https://docs.travis-ci.com/user/deployment#uploading-files-and-skip_cleanup.
-        skip_cleanup: true
-      <<: *extended-test-suite
-
-# container-based infrastructure
-sudo: false
-
-addons:
-  apt:
-    packages:  # Keep in sync with letsencrypt-auto-source/pieces/bootstrappers/deb_common.sh and Boulder.
-    - python-dev
-    - gcc
-    - libaugeas0
-    - libssl-dev
-    - libffi-dev
-    - ca-certificates
-    # For certbot-nginx integration testing
-    - nginx-light
-    - openssl
-
-# tools/pip_install.py is used to pin packages to a known working version
-# except in tests where the environment variable CERTBOT_NO_PIN is set.
-# virtualenv is listed here explicitly to make sure it is upgraded when
-# CERTBOT_NO_PIN is set to work around failures we've seen when using an older
-# version of virtualenv. The option "-I" is set so when CERTBOT_NO_PIN is also
-# set, pip updates dependencies it thinks are already satisfied to avoid some
-# problems with its lack of real dependency resolution.
-install: 'tools/pip_install.py -I tox virtualenv'
-# Most of the time TRAVIS_RETRY is an empty string, and has no effect on the
-# script command. It is set only to `travis_retry` during farm tests, in
-# order to trigger the Travis retry feature, and compensate the inherent
-# flakiness of these specific tests.
-script: '$TRAVIS_RETRY tox'
-
-notifications:
-  email: false
-  irc:
-    if: NOT branch =~ ^(travis-)?test-.*$
-    channels:
-      # This is set to a secure variable to prevent forks from sending
-      # notifications. This value was created by installing
-      # https://github.com/travis-ci/travis.rb and running
-      # `travis encrypt "chat.freenode.net#certbot-devel"`.
-      - secure: "EWW66E2+KVPZyIPR8ViENZwfcup4Gx3/dlimmAZE0WuLwxDCshBBOd3O8Rf6pBokEoZlXM5eDT6XdyJj8n0DLslgjO62pExdunXpbcMwdY7l1ELxX2/UbnDTE6UnPYa09qVBHNG7156Z6yE0x2lH4M9Ykvp0G0cubjPQHylAwo0="
-    on_cancel: never
-    on_success: never
-    on_failure: always

AUTHORS.md

@@ -1,6 +1,7 @@
 Authors
 =======
 
+* [Aaron Gable](https://github.com/aarongable)
 * [Aaron Zirbes](https://github.com/aaronzirbes)
 * Aaron Zuehlke
 * Ada Lovelace
@@ -36,7 +37,8 @@ Authors
 * [Blake Griffith](https://github.com/cowlicks)
 * [Brad Warren](https://github.com/bmw)
 * [Brandon Kraft](https://github.com/kraftbj)
-* [Brandon Kreisel](https://github.com/kraftbj)
+* [Brandon Kreisel](https://github.com/BKreisel)
+* [Brian Heim](https://github.com/brianlheim)
 * [Cameron Steel](https://github.com/Tugzrida)
 * [Ceesjan Luiten](https://github.com/quinox)
 * [Chad Whitacre](https://github.com/whit537)
@@ -59,7 +61,9 @@ Authors
 * [DanCld](https://github.com/DanCld)
 * [Daniel Albers](https://github.com/AID)
 * [Daniel Aleksandersen](https://github.com/da2x)
+* [Daniel Almasi](https://github.com/almasen)
 * [Daniel Convissor](https://github.com/convissor)
+* [Daniel "Drex" Drexler](https://github.com/aeturnum)
 * [Daniel Huang](https://github.com/dhuang)
 * [Dave Guarino](https://github.com/daguar)
 * [David cz](https://github.com/dave-cz)
@@ -84,6 +88,7 @@ Authors
 * [Felix Schwarz](https://github.com/FelixSchwarz)
 * [Felix Yan](https://github.com/felixonmars)
 * [Filip Ochnik](https://github.com/filipochnik)
+* [Florian Klink](https://github.com/flokli)
 * [Francois Marier](https://github.com/fmarier)
 * [Frank](https://github.com/Frankkkkk)
 * [Frederic BLANC](https://github.com/fblanc)
@@ -146,11 +151,13 @@ Authors
 * [Lior Sabag](https://github.com/liorsbg)
 * [Lipis](https://github.com/lipis)
 * [lord63](https://github.com/lord63)
+* [Lorenzo Fundaró](https://github.com/lfundaro)
 * [Luca Beltrame](https://github.com/lbeltrame)
 * [Luca Ebach](https://github.com/lucebac)
 * [Luca Olivetti](https://github.com/olivluca)
 * [Luke Rogers](https://github.com/lukeroge)
 * [Maarten](https://github.com/mrtndwrd)
+* [Mads Jensen](https://github.com/atombrella)
 * [Maikel Martens](https://github.com/krukas)
 * [Malte Janduda](https://github.com/MalteJ)
 * [Mantas Mikulėnas](https://github.com/grawity)
@@ -202,6 +209,7 @@ Authors
 * [Pierre Jaury](https://github.com/kaiyou)
 * [Piotr Kasprzyk](https://github.com/kwadrat)
 * [Prayag Verma](https://github.com/pra85)
+* [Rasesh Patel](https://github.com/raspat1)
 * [Reinaldo de Souza Jr](https://github.com/juniorz)
 * [Remi Rampin](https://github.com/remram44)
 * [Rémy HUBSCHER](https://github.com/Natim)
@@ -209,6 +217,7 @@ Authors
 * [Richard Barnes](https://github.com/r-barnes)
 * [Richard Panek](https://github.com/kernelpanek)
 * [Robert Buchholz](https://github.com/rbu)
+* [Robert Dailey](https://github.com/pahrohfit)
 * [Robert Habermann](https://github.com/frennkie)
 * [Robert Xiao](https://github.com/nneonneo)
 * [Roland Shoemaker](https://github.com/rolandshoemaker)
@@ -234,6 +243,7 @@ Authors
 * [Spencer Bliven](https://github.com/sbliven)
 * [Stacey Sheldon](https://github.com/solidgoldbomb)
 * [Stavros Korokithakis](https://github.com/skorokithakis)
+* [Ștefan Talpalaru](https://github.com/stefantalpalaru)
 * [Stefan Weil](https://github.com/stweil)
 * [Steve Desmond](https://github.com/stevedesmond-ca)
 * [sydneyli](https://github.com/sydneyli)

CONTRIBUTING.md

@@ -11,7 +11,7 @@ to the Sphinx generated docs is provided below.
 
 
 [1] https://github.com/blog/1184-contributing-guidelines
-[2] http://docutils.sourceforge.net/docs/user/rst/quickref.html#hyperlink-targets
+[2] https://docutils.sourceforge.io/docs/user/rst/quickref.html#hyperlink-targets
 
 -->
 

Dockerfile-dev

@@ -1,5 +1,5 @@
 # This Dockerfile builds an image for development.
-FROM debian:buster
+FROM ubuntu:focal
 
 # Note: this only exposes the port to other docker containers.
 EXPOSE 80 443
@@ -8,13 +8,14 @@ WORKDIR /opt/certbot/src
 
 COPY . .
 RUN apt-get update && \
-    apt-get install apache2 git python3-dev python3-venv gcc libaugeas0 \
-                    libssl-dev libffi-dev ca-certificates openssl nginx-light -y && \
+    DEBIAN_FRONTEND=noninteractive apt-get install apache2 git python3-dev \
+        python3-venv gcc libaugeas0 libssl-dev libffi-dev ca-certificates \
+        openssl nginx-light -y --no-install-recommends && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/* \
            /tmp/* \
            /var/tmp/*
 
-RUN VENV_NAME="../venv3" python3 tools/venv3.py
+RUN VENV_NAME="../venv" python3 tools/venv.py
 
-ENV PATH /opt/certbot/venv3/bin:$PATH
+ENV PATH /opt/certbot/venv/bin:$PATH

acme/acme/__init__.py

@@ -6,7 +6,6 @@ This module is an implementation of the `ACME protocol`_.
 
 """
 import sys
-import warnings
 
 # This code exists to keep backwards compatibility with people using acme.jose
 # before it became the standalone josepy package.

acme/acme/challenges.py

@@ -5,18 +5,19 @@ import functools
 import hashlib
 import logging
 import socket
+from typing import Type
 
-from cryptography.hazmat.primitives import hashes  # type: ignore
+from cryptography.hazmat.primitives import hashes
 import josepy as jose
-import requests
-import six
-from OpenSSL import SSL  # type: ignore # https://github.com/python/typeshed/issues/2052
 from OpenSSL import crypto
+from OpenSSL import SSL
+import requests
 
 from acme import crypto_util
 from acme import errors
 from acme import fields
-from acme.mixins import ResourceMixin, TypeMixin
+from acme.mixins import ResourceMixin
+from acme.mixins import TypeMixin
 
 logger = logging.getLogger(__name__)
 
@@ -24,12 +25,12 @@ logger = logging.getLogger(__name__)
 class Challenge(jose.TypedJSONObjectWithFields):
     # _fields_to_partial_json
     """ACME challenge."""
-    TYPES = {}  # type: dict
+    TYPES: dict = {}
 
     @classmethod
     def from_json(cls, jobj):
         try:
-            return super(Challenge, cls).from_json(jobj)
+            return super().from_json(jobj)
         except jose.UnrecognizedTypeError as error:
             logger.debug(error)
             return UnrecognizedChallenge.from_json(jobj)
@@ -38,7 +39,7 @@ class Challenge(jose.TypedJSONObjectWithFields):
 class ChallengeResponse(ResourceMixin, TypeMixin, jose.TypedJSONObjectWithFields):
     # _fields_to_partial_json
     """ACME challenge response."""
-    TYPES = {}  # type: dict
+    TYPES: dict = {}
     resource_type = 'challenge'
     resource = fields.Resource(resource_type)
 
@@ -57,7 +58,7 @@ class UnrecognizedChallenge(Challenge):
     """
 
     def __init__(self, jobj):
-        super(UnrecognizedChallenge, self).__init__()
+        super().__init__()
         object.__setattr__(self, "jobj", jobj)
 
     def to_partial_json(self):
@@ -140,21 +141,20 @@ class KeyAuthorizationChallengeResponse(ChallengeResponse):
         return True
 
     def to_partial_json(self):
-        jobj = super(KeyAuthorizationChallengeResponse, self).to_partial_json()
+        jobj = super().to_partial_json()
         jobj.pop('keyAuthorization', None)
         return jobj
 
 
-@six.add_metaclass(abc.ABCMeta)
-class KeyAuthorizationChallenge(_TokenChallenge):
+class KeyAuthorizationChallenge(_TokenChallenge, metaclass=abc.ABCMeta):
     """Challenge based on Key Authorization.
 
     :param response_cls: Subclass of `KeyAuthorizationChallengeResponse`
-        that will be used to generate `response`.
+        that will be used to generate ``response``.
     :param str typ: type of the challenge
     """
-    typ = NotImplemented
-    response_cls = NotImplemented
+    typ: str = NotImplemented
+    response_cls: Type[KeyAuthorizationChallengeResponse] = NotImplemented
     thumbprint_hash_function = (
         KeyAuthorizationChallengeResponse.thumbprint_hash_function)
 
@@ -314,6 +314,15 @@ class HTTP01Response(KeyAuthorizationChallengeResponse):
         except requests.exceptions.RequestException as error:
             logger.error("Unable to reach %s: %s", uri, error)
             return False
+        # By default, http_response.text will try to guess the encoding to use
+        # when decoding the response to Python unicode strings. This guesswork
+        # is error prone. RFC 8555 specifies that HTTP-01 responses should be
+        # key authorizations with possible trailing whitespace. Since key
+        # authorizations must be composed entirely of the base64url alphabet
+        # plus ".", we tell requests that the response should be ASCII. See
+        # https://datatracker.ietf.org/doc/html/rfc8555#section-8.3 for more
+        # info.
+        http_response.encoding = "ascii"
         logger.debug("Received %s: %s. Headers: %s", http_response,
                      http_response.text, http_response.headers)
 

acme/acme/client.py

@@ -1,51 +1,47 @@
 """ACME client API."""
+# pylint: disable=too-many-lines
+# This pylint disable can be deleted once the deprecated ACMEv1 code is
+# removed.
 import base64
 import collections
 import datetime
 from email.utils import parsedate_tz
 import heapq
+import http.client as http_client
 import logging
 import re
 import sys
 import time
+from types import ModuleType
+from typing import cast
+from typing import Dict
+from typing import List
+from typing import Set
+from typing import Text
+from typing import Union
+import warnings
 
 import josepy as jose
 import OpenSSL
 import requests
 from requests.adapters import HTTPAdapter
+from requests.utils import parse_header_links
 from requests_toolbelt.adapters.source import SourceAddressAdapter
-import six
-from six.moves import http_client
 
 from acme import crypto_util
 from acme import errors
 from acme import jws
 from acme import messages
-from acme.magic_typing import Dict
-from acme.magic_typing import List
-from acme.magic_typing import Set
-from acme.magic_typing import Text
 from acme.mixins import VersionedLEACMEMixin
 
 logger = logging.getLogger(__name__)
 
-# Prior to Python 2.7.9 the stdlib SSL module did not allow a user to configure
-# many important security related options. On these platforms we use PyOpenSSL
-# for SSL, which does allow these options to be configured.
-# https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning
-if sys.version_info < (2, 7, 9):  # pragma: no cover
-    try:
-        requests.packages.urllib3.contrib.pyopenssl.inject_into_urllib3()  # type: ignore
-    except AttributeError:
-        import urllib3.contrib.pyopenssl
-        urllib3.contrib.pyopenssl.inject_into_urllib3()
-
 DEFAULT_NETWORK_TIMEOUT = 45
 
 DER_CONTENT_TYPE = 'application/pkix-cert'
 
 
-class ClientBase(object):
+class ClientBase:
     """ACME client base object.
 
     :ivar messages.Directory directory:
@@ -124,8 +120,9 @@ class ClientBase(object):
         """
         return self.update_registration(regr, update={'status': 'deactivated'})
 
-    def deactivate_authorization(self, authzr):
-        # type: (messages.AuthorizationResource) -> messages.AuthorizationResource
+    def deactivate_authorization(self,
+                                 authzr: messages.AuthorizationResource
+                                 ) -> messages.AuthorizationResource:
         """Deactivate authorization.
 
         :param messages.AuthorizationResource authzr: The Authorization resource
@@ -200,7 +197,7 @@ class ClientBase(object):
             when = parsedate_tz(retry_after)
             if when is not None:
                 try:
-                    tz_secs = datetime.timedelta(when[-1] if when[-1] else 0)
+                    tz_secs = datetime.timedelta(when[-1] if when[-1] is not None else 0)
                     return datetime.datetime(*when[:7]) - tz_secs
                 except (ValueError, OverflowError):
                     pass
@@ -233,6 +230,9 @@ class ClientBase(object):
 class Client(ClientBase):
     """ACME client for a v1 API.
 
+    .. deprecated:: 1.18.0
+       Use :class:`ClientV2` instead.
+
     .. todo::
        Clean up raised error types hierarchy, document, and handle (wrap)
        instances of `.DeserializationError` raised in `from_json()`.
@@ -259,10 +259,10 @@ class Client(ClientBase):
         if net is None:
             net = ClientNetwork(key, alg=alg, verify_ssl=verify_ssl)
 
-        if isinstance(directory, six.string_types):
+        if isinstance(directory, str):
             directory = messages.Directory.from_json(
                 net.get(directory).json())
-        super(Client, self).__init__(directory=directory,
+        super().__init__(directory=directory,
             net=net, acme_version=1)
 
     def register(self, new_reg=None):
@@ -435,7 +435,7 @@ class Client(ClientBase):
 
         """
         assert max_attempts > 0
-        attempts = collections.defaultdict(int) # type: Dict[messages.AuthorizationResource, int]
+        attempts: Dict[messages.AuthorizationResource, int] = collections.defaultdict(int)
         exhausted = set()
 
         # priority queue with datetime.datetime (based on Retry-After) as key,
@@ -447,7 +447,7 @@ class Client(ClientBase):
         heapq.heapify(waiting)
         # mapping between original Authorization Resource and the most
         # recently updated one
-        updated = dict((authzr, authzr) for authzr in authzrs)
+        updated = {authzr: authzr for authzr in authzrs}
 
         while waiting:
             # find the smallest Retry-After, and sleep if necessary
@@ -474,7 +474,7 @@ class Client(ClientBase):
                     exhausted.add(authzr)
 
         if exhausted or any(authzr.body.status == messages.STATUS_INVALID
-                            for authzr in six.itervalues(updated)):
+                            for authzr in updated.values()):
             raise errors.PollError(exhausted, updated)
 
         updated_authzrs = tuple(updated[authzr] for authzr in authzrs)
@@ -548,7 +548,7 @@ class Client(ClientBase):
         :rtype: `list` of `OpenSSL.crypto.X509` wrapped in `.ComparableX509`
 
         """
-        chain = [] # type: List[jose.ComparableX509]
+        chain: List[jose.ComparableX509] = []
         uri = certr.cert_chain_uri
         while uri is not None and len(chain) < max_length:
             response, cert = self._get_cert(uri)
@@ -586,7 +586,7 @@ class ClientV2(ClientBase):
         :param .messages.Directory directory: Directory Resource
         :param .ClientNetwork net: Client network.
         """
-        super(ClientV2, self).__init__(directory=directory,
+        super().__init__(directory=directory,
             net=net, acme_version=2)
 
     def new_account(self, new_account):
@@ -636,7 +636,7 @@ class ClientV2(ClientBase):
         """
         # https://github.com/certbot/certbot/issues/6155
         new_regr = self._get_v2_account(regr)
-        return super(ClientV2, self).update_registration(new_regr, update)
+        return super().update_registration(new_regr, update)
 
     def _get_v2_account(self, regr):
         self.net.account = None
@@ -658,16 +658,23 @@ class ClientV2(ClientBase):
         csr = OpenSSL.crypto.load_certificate_request(OpenSSL.crypto.FILETYPE_PEM, csr_pem)
         # pylint: disable=protected-access
         dnsNames = crypto_util._pyopenssl_cert_or_req_all_names(csr)
-
+        ipNames = crypto_util._pyopenssl_cert_or_req_san_ip(csr)
+        # ipNames is now []string
         identifiers = []
         for name in dnsNames:
             identifiers.append(messages.Identifier(typ=messages.IDENTIFIER_FQDN,
                 value=name))
+        for ips in ipNames:
+            identifiers.append(messages.Identifier(typ=messages.IDENTIFIER_IP,
+                value=ips))
         order = messages.NewOrder(identifiers=identifiers)
         response = self._post(self.directory['newOrder'], order)
         body = messages.Order.from_json(response.json())
         authorizations = []
-        for url in body.authorizations:
+        # pylint has trouble understanding our josepy based objects which use
+        # things like custom metaclass logic. body.authorizations should be a
+        # list of strings containing URLs so let's disable this check here.
+        for url in body.authorizations:  # pylint: disable=not-an-iterable
             authorizations.append(self._authzr_from_response(self._post_as_get(url), uri=url))
         return messages.OrderResource(
             body=body,
@@ -733,11 +740,13 @@ class ClientV2(ClientBase):
             raise errors.ValidationError(failed)
         return orderr.update(authorizations=responses)
 
-    def finalize_order(self, orderr, deadline):
+    def finalize_order(self, orderr, deadline, fetch_alternative_chains=False):
         """Finalize an order and obtain a certificate.
 
         :param messages.OrderResource orderr: order to finalize
         :param datetime.datetime deadline: when to stop polling and timeout
+        :param bool fetch_alternative_chains: whether to also fetch alternative
+            certificate chains
 
         :returns: finalized order
         :rtype: messages.OrderResource
@@ -754,8 +763,13 @@ class ClientV2(ClientBase):
             if body.error is not None:
                 raise errors.IssuanceError(body.error)
             if body.certificate is not None:
-                certificate_response = self._post_as_get(body.certificate).text
-                return orderr.update(body=body, fullchain_pem=certificate_response)
+                certificate_response = self._post_as_get(body.certificate)
+                orderr = orderr.update(body=body, fullchain_pem=certificate_response.text)
+                if fetch_alternative_chains:
+                    alt_chains_urls = self._get_links(certificate_response, 'alternate')
+                    alt_chains = [self._post_as_get(url).text for url in alt_chains_urls]
+                    orderr = orderr.update(alternative_fullchains_pem=alt_chains)
+                return orderr
         raise errors.TimeoutError()
 
     def revoke(self, cert, rsn):
@@ -785,11 +799,28 @@ class ClientV2(ClientBase):
         new_args = args[:1] + (None,) + args[1:]
         return self._post(*new_args, **kwargs)
 
+    def _get_links(self, response, relation_type):
+        """
+        Retrieves all Link URIs of relation_type from the response.
+        :param requests.Response response: The requests HTTP response.
+        :param str relation_type: The relation type to filter by.
+        """
+        # Can't use response.links directly because it drops multiple links
+        # of the same relation type, which is possible in RFC8555 responses.
+        if 'Link' not in response.headers:
+            return []
+        links = parse_header_links(response.headers['Link'])
+        return [l['url'] for l in links
+                if 'rel' in l and 'url' in l and l['rel'] == relation_type]
 
-class BackwardsCompatibleClientV2(object):
+
+class BackwardsCompatibleClientV2:
     """ACME client wrapper that tends towards V2-style calls, but
     supports V1 servers.
 
+    .. deprecated:: 1.18.0
+       Use :class:`ClientV2` instead.
+
     .. note:: While this class handles the majority of the differences
         between versions of the ACME protocol, if you need to support an
         ACME server based on version 3 or older of the IETF ACME draft
@@ -808,6 +839,7 @@ class BackwardsCompatibleClientV2(object):
     def __init__(self, net, key, server):
         directory = messages.Directory.from_json(net.get(server).json())
         self.acme_version = self._acme_version_from_directory(directory)
+        self.client: Union[Client, ClientV2]
         if self.acme_version == 1:
             self.client = Client(directory, key=key, net=net)
         else:
@@ -827,16 +859,18 @@ class BackwardsCompatibleClientV2(object):
             if check_tos_cb is not None:
                 check_tos_cb(tos)
         if self.acme_version == 1:
-            regr = self.client.register(regr)
+            client_v1 = cast(Client, self.client)
+            regr = client_v1.register(regr)
             if regr.terms_of_service is not None:
                 _assess_tos(regr.terms_of_service)
-                return self.client.agree_to_tos(regr)
+                return client_v1.agree_to_tos(regr)
             return regr
         else:
-            if "terms_of_service" in self.client.directory.meta:
-                _assess_tos(self.client.directory.meta.terms_of_service)
+            client_v2 = cast(ClientV2, self.client)
+            if "terms_of_service" in client_v2.directory.meta:
+                _assess_tos(client_v2.directory.meta.terms_of_service)
                 regr = regr.update(terms_of_service_agreed=True)
-            return self.client.new_account(regr)
+            return client_v2.new_account(regr)
 
     def new_order(self, csr_pem):
         """Request a new Order object from the server.
@@ -854,28 +888,32 @@ class BackwardsCompatibleClientV2(object):
 
         """
         if self.acme_version == 1:
+            client_v1 = cast(Client, self.client)
             csr = OpenSSL.crypto.load_certificate_request(OpenSSL.crypto.FILETYPE_PEM, csr_pem)
             # pylint: disable=protected-access
             dnsNames = crypto_util._pyopenssl_cert_or_req_all_names(csr)
             authorizations = []
             for domain in dnsNames:
-                authorizations.append(self.client.request_domain_challenges(domain))
+                authorizations.append(client_v1.request_domain_challenges(domain))
             return messages.OrderResource(authorizations=authorizations, csr_pem=csr_pem)
-        return self.client.new_order(csr_pem)
+        return cast(ClientV2, self.client).new_order(csr_pem)
 
-    def finalize_order(self, orderr, deadline):
+    def finalize_order(self, orderr, deadline, fetch_alternative_chains=False):
         """Finalize an order and obtain a certificate.
 
         :param messages.OrderResource orderr: order to finalize
         :param datetime.datetime deadline: when to stop polling and timeout
+        :param bool fetch_alternative_chains: whether to also fetch alternative
+            certificate chains
 
         :returns: finalized order
         :rtype: messages.OrderResource
 
         """
         if self.acme_version == 1:
+            client_v1 = cast(Client, self.client)
             csr_pem = orderr.csr_pem
-            certr = self.client.request_issuance(
+            certr = client_v1.request_issuance(
                 jose.ComparableX509(
                     OpenSSL.crypto.load_certificate_request(OpenSSL.crypto.FILETYPE_PEM, csr_pem)),
                     orderr.authorizations)
@@ -883,7 +921,7 @@ class BackwardsCompatibleClientV2(object):
             chain = None
             while datetime.datetime.now() < deadline:
                 try:
-                    chain = self.client.fetch_chain(certr)
+                    chain = client_v1.fetch_chain(certr)
                     break
                 except errors.Error:
                     time.sleep(1)
@@ -898,7 +936,8 @@ class BackwardsCompatibleClientV2(object):
             chain = crypto_util.dump_pyopenssl_chain(chain).decode()
 
             return orderr.update(fullchain_pem=(cert + chain))
-        return self.client.finalize_order(orderr, deadline)
+        return cast(ClientV2, self.client).finalize_order(
+            orderr, deadline, fetch_alternative_chains)
 
     def revoke(self, cert, rsn):
         """Revoke certificate.
@@ -924,10 +963,10 @@ class BackwardsCompatibleClientV2(object):
         Always return False for ACMEv1 servers, as it doesn't use External Account Binding."""
         if self.acme_version == 1:
             return False
-        return self.client.external_account_required()
+        return cast(ClientV2, self.client).external_account_required()
 
 
-class ClientNetwork(object):
+class ClientNetwork:
     """Wrapper around requests that signs POSTs for authentication.
 
     Also adds user agent, and handles Content-Type.
@@ -957,7 +996,7 @@ class ClientNetwork(object):
         self.account = account
         self.alg = alg
         self.verify_ssl = verify_ssl
-        self._nonces = set() # type: Set[Text]
+        self._nonces: Set[Text] = set()
         self.user_agent = user_agent
         self.session = requests.Session()
         self._default_timeout = timeout
@@ -1115,12 +1154,23 @@ class ClientNetwork(object):
             host, path, _err_no, err_msg = m.groups()
             raise ValueError("Requesting {0}{1}:{2}".format(host, path, err_msg))
 
-        # If content is DER, log the base64 of it instead of raw bytes, to keep
-        # binary data out of the logs.
-        if response.headers.get("Content-Type") == DER_CONTENT_TYPE:
+        # If the Content-Type is DER or an Accept header was sent in the
+        # request, the response may not be UTF-8 encoded. In this case, we
+        # don't set response.encoding and log the base64 response instead of
+        # raw bytes to keep binary data out of the logs. This code can be
+        # simplified to only check for an Accept header in the request when
+        # ACMEv1 support is dropped.
+        debug_content: Union[bytes, str]
+        if (response.headers.get("Content-Type") == DER_CONTENT_TYPE or
+                "Accept" in kwargs["headers"]):
             debug_content = base64.b64encode(response.content)
         else:
-            debug_content = response.content.decode("utf-8")
+            # We set response.encoding so response.text knows the response is
+            # UTF-8 encoded instead of trying to guess the encoding that was
+            # used which is error prone. This setting affects all future
+            # accesses of .text made on the returned response object as well.
+            response.encoding = "utf-8"
+            debug_content = response.text
         logger.debug('Received response:\nHTTP %d\n%s\n\n%s',
                      response.status_code,
                      "\n".join("{0}: {1}".format(k, v)
@@ -1190,3 +1240,35 @@ class ClientNetwork(object):
         response = self._check_response(response, content_type=content_type)
         self._add_nonce(response)
         return response
+
+
+# This class takes a similar approach to the cryptography project to deprecate attributes
+# in public modules. See the _ModuleWithDeprecation class here:
+# https://github.com/pyca/cryptography/blob/91105952739442a74582d3e62b3d2111365b0dc7/src/cryptography/utils.py#L129
+class _ClientDeprecationModule:
+    """
+    Internal class delegating to a module, and displaying warnings when attributes
+    related to deprecated attributes in the acme.client module.
+    """
+    def __init__(self, module):
+        self.__dict__['_module'] = module
+
+    def __getattr__(self, attr):
+        if attr in ('Client', 'BackwardsCompatibleClientV2'):
+            warnings.warn('The {0} attribute in acme.client is deprecated '
+                          'and will be removed soon.'.format(attr),
+                          DeprecationWarning, stacklevel=2)
+        return getattr(self._module, attr)
+
+    def __setattr__(self, attr, value):  # pragma: no cover
+        setattr(self._module, attr, value)
+
+    def __delattr__(self, attr):  # pragma: no cover
+        delattr(self._module, attr)
+
+    def __dir__(self):  # pragma: no cover
+        return ['_module'] + dir(self._module)
+
+
+# Patching ourselves to warn about deprecation and planned removal of some elements in the module.
+sys.modules[__name__] = cast(ModuleType, _ClientDeprecationModule(sys.modules[__name__]))

acme/acme/crypto_util.py

@@ -5,15 +5,15 @@ import logging
 import os
 import re
 import socket
+from typing import Callable
+from typing import Tuple
+from typing import Union
 
 import josepy as jose
 from OpenSSL import crypto
-from OpenSSL import SSL  # type: ignore # https://github.com/python/typeshed/issues/2052
+from OpenSSL import SSL
 
 from acme import errors
-from acme.magic_typing import Callable
-from acme.magic_typing import Tuple
-from acme.magic_typing import Union
 
 logger = logging.getLogger(__name__)
 
@@ -24,10 +24,10 @@ logger = logging.getLogger(__name__)
 # https://www.openssl.org/docs/ssl/SSLv23_method.html). _serve_sni
 # should be changed to use "set_options" to disable SSLv2 and SSLv3,
 # in case it's used for things other than probing/serving!
-_DEFAULT_SSL_METHOD = SSL.SSLv23_METHOD  # type: ignore
+_DEFAULT_SSL_METHOD = SSL.SSLv23_METHOD
 
 
-class _DefaultCertSelection(object):
+class _DefaultCertSelection:
     def __init__(self, certs):
         self.certs = certs
 
@@ -36,7 +36,7 @@ class _DefaultCertSelection(object):
         return self.certs.get(server_name, None)
 
 
-class SSLSocket(object):  # pylint: disable=too-few-public-methods
+class SSLSocket:  # pylint: disable=too-few-public-methods
     """SSL wrapper for sockets.
 
     :ivar socket sock: Original wrapped socket.
@@ -93,7 +93,7 @@ class SSLSocket(object):  # pylint: disable=too-few-public-methods
             new_context.set_alpn_select_callback(self.alpn_selection)
         connection.set_context(new_context)
 
-    class FakeConnection(object):
+    class FakeConnection:
         """Fake OpenSSL.SSL.Connection."""
 
         # pylint: disable=missing-function-docstring
@@ -166,10 +166,10 @@ def probe_sni(name, host, port=443, timeout=300, # pylint: disable=too-many-argu
             " from {0}:{1}".format(
                 source_address[0],
                 source_address[1]
-            ) if socket_kwargs else ""
+            ) if any(source_address) else ""
         )
-        socket_tuple = (host, port)  # type: Tuple[str, int]
-        sock = socket.create_connection(socket_tuple, **socket_kwargs)  # type: ignore
+        socket_tuple: Tuple[str, int] = (host, port)
+        sock = socket.create_connection(socket_tuple, **socket_kwargs)
     except socket.error as error:
         raise errors.Error(error)
 
@@ -186,23 +186,43 @@ def probe_sni(name, host, port=443, timeout=300, # pylint: disable=too-many-argu
             raise errors.Error(error)
     return client_ssl.get_peer_certificate()
 
-def make_csr(private_key_pem, domains, must_staple=False):
-    """Generate a CSR containing a list of domains as subjectAltNames.
+
+def make_csr(private_key_pem, domains=None, must_staple=False, ipaddrs=None):
+    """Generate a CSR containing domains or IPs as subjectAltNames.
 
     :param buffer private_key_pem: Private key, in PEM PKCS#8 format.
     :param list domains: List of DNS names to include in subjectAltNames of CSR.
     :param bool must_staple: Whether to include the TLS Feature extension (aka
         OCSP Must Staple: https://tools.ietf.org/html/rfc7633).
+    :param list ipaddrs: List of IPaddress(type ipaddress.IPv4Address or ipaddress.IPv6Address)
+    names to include in subbjectAltNames of CSR.
+    params ordered this way for backward competablity when called by positional argument.
     :returns: buffer PEM-encoded Certificate Signing Request.
     """
     private_key = crypto.load_privatekey(
         crypto.FILETYPE_PEM, private_key_pem)
     csr = crypto.X509Req()
+    sanlist = []
+    # if domain or ip list not supplied make it empty list so it's easier to iterate
+    if domains is None:
+        domains = []
+    if ipaddrs is None:
+        ipaddrs = []
+    if len(domains)+len(ipaddrs) == 0:
+        raise ValueError("At least one of domains or ipaddrs parameter need to be not empty")
+    for address in domains:
+        sanlist.append('DNS:' + address)
+    for ips in ipaddrs:
+        sanlist.append('IP:' + ips.exploded)
+    # make sure its ascii encoded
+    san_string = ', '.join(sanlist).encode('ascii')
+    # for IP san it's actually need to be octet-string,
+    # but somewhere downsteam thankfully handle it for us
     extensions = [
         crypto.X509Extension(
             b'subjectAltName',
             critical=False,
-            value=', '.join('DNS:' + d for d in domains).encode('ascii')
+            value=san_string
         ),
     ]
     if must_staple:
@@ -217,7 +237,9 @@ def make_csr(private_key_pem, domains, must_staple=False):
     return crypto.dump_certificate_request(
         crypto.FILETYPE_PEM, csr)
 
+
 def _pyopenssl_cert_or_req_all_names(loaded_cert_or_req):
+    # unlike its name this only outputs DNS names, other type of idents will ignored
     common_name = loaded_cert_or_req.get_subject().CN
     sans = _pyopenssl_cert_or_req_san(loaded_cert_or_req)
 
@@ -225,6 +247,7 @@ def _pyopenssl_cert_or_req_all_names(loaded_cert_or_req):
         return sans
     return [common_name] + [d for d in sans if d != common_name]
 
+
 def _pyopenssl_cert_or_req_san(cert_or_req):
     """Get Subject Alternative Names from certificate or CSR using pyOpenSSL.
 
@@ -236,40 +259,76 @@ def _pyopenssl_cert_or_req_san(cert_or_req):
     :param cert_or_req: Certificate or CSR.
     :type cert_or_req: `OpenSSL.crypto.X509` or `OpenSSL.crypto.X509Req`.
 
-    :returns: A list of Subject Alternative Names.
+    :returns: A list of Subject Alternative Names that is DNS.
     :rtype: `list` of `unicode`
 
     """
-    # This function finds SANs by dumping the certificate/CSR to text and
-    # searching for "X509v3 Subject Alternative Name" in the text. This method
-    # is used to support PyOpenSSL version 0.13 where the
-    # `_subjectAltNameString` and `get_extensions` methods are not available
-    # for CSRs.
+    # This function finds SANs with dns name
 
     # constants based on PyOpenSSL certificate/CSR text dump
     part_separator = ":"
-    parts_separator = ", "
     prefix = "DNS" + part_separator
 
-    if isinstance(cert_or_req, crypto.X509):
-        # pylint: disable=line-too-long
-        func = crypto.dump_certificate # type: Union[Callable[[int, crypto.X509Req], bytes], Callable[[int, crypto.X509], bytes]]
-    else:
-        func = crypto.dump_certificate_request
-    text = func(crypto.FILETYPE_TEXT, cert_or_req).decode("utf-8")
-    # WARNING: this function does not support multiple SANs extensions.
-    # Multiple X509v3 extensions of the same type is disallowed by RFC 5280.
-    match = re.search(r"X509v3 Subject Alternative Name:(?: critical)?\s*(.*)", text)
-    # WARNING: this function assumes that no SAN can include
-    # parts_separator, hence the split!
-    sans_parts = [] if match is None else match.group(1).split(parts_separator)
+    sans_parts = _pyopenssl_extract_san_list_raw(cert_or_req)
 
     return [part.split(part_separator)[1]
             for part in sans_parts if part.startswith(prefix)]
 
 
-def gen_ss_cert(key, domains, not_before=None,
-                validity=(7 * 24 * 60 * 60), force_san=True, extensions=None):
+def _pyopenssl_cert_or_req_san_ip(cert_or_req):
+    """Get Subject Alternative Names IPs from certificate or CSR using pyOpenSSL.
+
+    :param cert_or_req: Certificate or CSR.
+    :type cert_or_req: `OpenSSL.crypto.X509` or `OpenSSL.crypto.X509Req`.
+
+    :returns: A list of Subject Alternative Names that are IP Addresses.
+    :rtype: `list` of `unicode`. note that this returns as string, not IPaddress object
+
+    """
+
+    # constants based on PyOpenSSL certificate/CSR text dump
+    part_separator = ":"
+    prefix = "IP Address" + part_separator
+
+    sans_parts = _pyopenssl_extract_san_list_raw(cert_or_req)
+
+    return [part[len(prefix):] for part in sans_parts if part.startswith(prefix)]
+
+
+def _pyopenssl_extract_san_list_raw(cert_or_req):
+    """Get raw SAN string from cert or csr, parse it as UTF-8 and return.
+
+    :param cert_or_req: Certificate or CSR.
+    :type cert_or_req: `OpenSSL.crypto.X509` or `OpenSSL.crypto.X509Req`.
+
+    :returns: raw san strings, parsed byte as utf-8
+    :rtype: `list` of `unicode`
+
+    """
+    # This function finds SANs by dumping the certificate/CSR to text and
+    # searching for "X509v3 Subject Alternative Name" in the text. This method
+    # is used to because in PyOpenSSL version <0.17 `_subjectAltNameString` methods are
+    # not able to Parse IP Addresses in subjectAltName string.
+
+    if isinstance(cert_or_req, crypto.X509):
+        # pylint: disable=line-too-long
+        func: Union[Callable[[int, crypto.X509Req], bytes], Callable[[int, crypto.X509], bytes]] = crypto.dump_certificate
+    else:
+        func = crypto.dump_certificate_request
+    text = func(crypto.FILETYPE_TEXT, cert_or_req).decode("utf-8")
+    # WARNING: this function does not support multiple SANs extensions.
+    # Multiple X509v3 extensions of the same type is disallowed by RFC 5280.
+    raw_san = re.search(r"X509v3 Subject Alternative Name:(?: critical)?\s*(.*)", text)
+
+    parts_separator = ", "
+    # WARNING: this function assumes that no SAN can include
+    # parts_separator, hence the split!
+    sans_parts = [] if raw_san is None else raw_san.group(1).split(parts_separator)
+    return sans_parts
+
+
+def gen_ss_cert(key, domains=None, not_before=None,
+                validity=(7 * 24 * 60 * 60), force_san=True, extensions=None, ips=None):
     """Generate new self-signed certificate.
 
     :type domains: `list` of `unicode`
@@ -277,6 +336,7 @@ def gen_ss_cert(key, domains, not_before=None,
     :param bool force_san:
     :param extensions: List of additional extensions to include in the cert.
     :type extensions: `list` of `OpenSSL.crypto.X509Extension`
+    :type ips: `list` of (`ipaddress.IPv4Address` or `ipaddress.IPv6Address`)
 
     If more than one domain is provided, all of the domains are put into
     ``subjectAltName`` X.509 extension and first domain is set as the
@@ -284,28 +344,39 @@ def gen_ss_cert(key, domains, not_before=None,
     extension is used, unless `force_san` is ``True``.
 
     """
-    assert domains, "Must provide one or more hostnames for the cert."
+    assert domains or ips, "Must provide one or more hostnames or IPs for the cert."
+
     cert = crypto.X509()
     cert.set_serial_number(int(binascii.hexlify(os.urandom(16)), 16))
     cert.set_version(2)
 
     if extensions is None:
         extensions = []
-
+    if domains is None:
+        domains = []
+    if ips is None:
+        ips = []
     extensions.append(
         crypto.X509Extension(
             b"basicConstraints", True, b"CA:TRUE, pathlen:0"),
     )
 
-    cert.get_subject().CN = domains[0]
+    if len(domains) > 0:
+        cert.get_subject().CN = domains[0]
     # TODO: what to put into cert.get_subject()?
     cert.set_issuer(cert.get_subject())
 
-    if force_san or len(domains) > 1:
+    sanlist = []
+    for address in domains:
+        sanlist.append('DNS:' + address)
+    for ip in ips:
+        sanlist.append('IP:' + ip.exploded)
+    san_string = ', '.join(sanlist).encode('ascii')
+    if force_san or len(domains) > 1 or len(ips) > 0:
         extensions.append(crypto.X509Extension(
             b"subjectAltName",
             critical=False,
-            value=b", ".join(b"DNS:" + d.encode() for d in domains)
+            value=san_string
         ))
 
     cert.add_extensions(extensions)
@@ -317,6 +388,7 @@ def gen_ss_cert(key, domains, not_before=None,
     cert.sign(key, "sha256")
     return cert
 
+
 def dump_pyopenssl_chain(chain, filetype=crypto.FILETYPE_PEM):
     """Dump certificate chain into a bundle.
 

acme/acme/errors.py

@@ -28,13 +28,8 @@ class NonceError(ClientError):
 
 class BadNonce(NonceError):
     """Bad nonce error."""
-    def __init__(self, nonce, error, *args, **kwargs):
-        # MyPy complains here that there is too many arguments for BaseException constructor.
-        # This is an error fixed in typeshed, see https://github.com/python/mypy/issues/4183
-        # The fix is included in MyPy>=0.740, but upgrading it would bring dozen of errors due to
-        #   new types definitions. So we ignore the error until the code base is fixed to match
-        #   with MyPy>=0.740 referential.
-        super(BadNonce, self).__init__(*args, **kwargs)  # type: ignore
+    def __init__(self, nonce, error, *args):
+        super().__init__(*args)
         self.nonce = nonce
         self.error = error
 
@@ -49,12 +44,11 @@ class MissingNonce(NonceError):
     Replay-Nonce header field in each successful response to a POST it
     provides to a client (...)".
 
-    :ivar requests.Response response: HTTP Response
+    :ivar requests.Response ~.response: HTTP Response
 
     """
-    def __init__(self, response, *args, **kwargs):
-        # See comment in BadNonce constructor above for an explanation of type: ignore here.
-        super(MissingNonce, self).__init__(*args, **kwargs)  # type: ignore
+    def __init__(self, response, *args):
+        super().__init__(*args)
         self.response = response
 
     def __str__(self):
@@ -78,7 +72,7 @@ class PollError(ClientError):
     def __init__(self, exhausted, updated):
         self.exhausted = exhausted
         self.updated = updated
-        super(PollError, self).__init__()
+        super().__init__()
 
     @property
     def timeout(self):
@@ -96,7 +90,7 @@ class ValidationError(Error):
     """
     def __init__(self, failed_authzrs):
         self.failed_authzrs = failed_authzrs
-        super(ValidationError, self).__init__()
+        super().__init__()
 
 
 class TimeoutError(Error):  # pylint: disable=redefined-builtin
@@ -112,7 +106,7 @@ class IssuanceError(Error):
         :param messages.Error error: The error provided by the server.
         """
         self.error = error
-        super(IssuanceError, self).__init__()
+        super().__init__()
 
 
 class ConflictError(ClientError):
@@ -125,7 +119,7 @@ class ConflictError(ClientError):
     """
     def __init__(self, location):
         self.location = location
-        super(ConflictError, self).__init__()
+        super().__init__()
 
 
 class WildcardUnsupportedError(Error):

acme/acme/fields.py

@@ -12,7 +12,7 @@ class Fixed(jose.Field):
 
     def __init__(self, json_name, value):
         self.value = value
-        super(Fixed, self).__init__(
+        super().__init__(
             json_name=json_name, default=value, omitempty=False)
 
     def decode(self, value):
@@ -53,7 +53,7 @@ class Resource(jose.Field):
 
     def __init__(self, resource_type, *args, **kwargs):
         self.resource_type = resource_type
-        super(Resource, self).__init__(
+        super().__init__(
             'resource', default=resource_type, *args, **kwargs)
 
     def decode(self, value):

acme/acme/jws.py

@@ -14,7 +14,9 @@ class Header(jose.Header):
     kid = jose.Field('kid', omitempty=True)
     url = jose.Field('url', omitempty=True)
 
-    @nonce.decoder
+    # Mypy does not understand the josepy magic happening here, and falsely claims
+    # that nonce is redefined. Let's ignore the type check here.
+    @nonce.decoder  # type: ignore
     def nonce(value):  # pylint: disable=no-self-argument,missing-function-docstring
         try:
             return jose.decode_b64jose(value)
@@ -48,7 +50,7 @@ class JWS(jose.JWS):
         # Per ACME spec, jwk and kid are mutually exclusive, so only include a
         # jwk field if kid is not provided.
         include_jwk = kid is None
-        return super(JWS, cls).sign(payload, key=key, alg=alg,
+        return super().sign(payload, key=key, alg=alg,
                                     protect=frozenset(['nonce', 'url', 'kid', 'jwk', 'alg']),
                                     nonce=nonce, url=url, kid=kid,
                                     include_jwk=include_jwk)

acme/acme/magic_typing.py

@@ -1,15 +1,17 @@
-"""Shim class to not have to depend on typing module in prod."""
-import sys
+"""Simple shim around the typing module.
 
+This was useful when this code supported Python 2 and typing wasn't always
+available. This code is being kept for now for backwards compatibility.
 
-class TypingClass(object):
+"""
+import warnings
+from typing import *  # pylint: disable=wildcard-import, unused-wildcard-import
+from typing import Collection, IO
+
+warnings.warn("acme.magic_typing is deprecated and will be removed in a future release.",
+              DeprecationWarning)
+
+class TypingClass:
     """Ignore import errors by getting anything"""
     def __getattr__(self, name):
-        return None
-
-try:
-    # mypy doesn't respect modifying sys.modules
-    from typing import *  # pylint: disable=wildcard-import, unused-wildcard-import
-    from typing import Collection, IO  # type: ignore
-except ImportError:
-    sys.modules[__name__] = TypingClass()
+        return None  # pragma: no cover

acme/acme/messages.py

@@ -1,8 +1,11 @@
 """ACME protocol messages."""
+from collections.abc import Hashable
 import json
+from typing import Any
+from typing import Dict
+from typing import Type
 
 import josepy as jose
-import six
 
 from acme import challenges
 from acme import errors
@@ -11,13 +14,6 @@ from acme import jws
 from acme import util
 from acme.mixins import ResourceMixin
 
-try:
-    from collections.abc import Hashable
-except ImportError:  # pragma: no cover
-    from collections import Hashable
-
-
-
 OLD_ERROR_PREFIX = "urn:acme:error:"
 ERROR_PREFIX = "urn:ietf:params:acme:error:"
 
@@ -68,7 +64,6 @@ def is_acme_error(err):
     return False
 
 
-@six.python_2_unicode_compatible
 class Error(jose.JSONObjectWithFields, errors.Error):
     """ACME error.
 
@@ -95,7 +90,9 @@ class Error(jose.JSONObjectWithFields, errors.Error):
             raise ValueError("The supplied code: %s is not a known ACME error"
                              " code" % code)
         typ = ERROR_PREFIX + code
-        return cls(typ=typ, **kwargs)
+        # Mypy will not understand that the Error constructor accepts a named argument
+        # "typ" because of josepy magic. Let's ignore the type check here.
+        return cls(typ=typ, **kwargs)  # type: ignore
 
     @property
     def description(self):
@@ -117,7 +114,7 @@ class Error(jose.JSONObjectWithFields, errors.Error):
         :rtype: unicode
 
         """
-        code = str(self.typ).split(':')[-1]
+        code = str(self.typ).rsplit(':', maxsplit=1)[-1]
         if code in ERROR_CODES:
             return code
         return None
@@ -129,13 +126,13 @@ class Error(jose.JSONObjectWithFields, errors.Error):
             if part is not None).decode()
 
 
-class _Constant(jose.JSONDeSerializable, Hashable):  # type: ignore
+class _Constant(jose.JSONDeSerializable, Hashable):
     """ACME constant."""
     __slots__ = ('name',)
-    POSSIBLE_NAMES = NotImplemented
+    POSSIBLE_NAMES: Dict[str, '_Constant'] = NotImplemented
 
     def __init__(self, name):
-        super(_Constant, self).__init__()
+        super().__init__()
         self.POSSIBLE_NAMES[name] = self  # pylint: disable=unsupported-assignment-operation
         self.name = name
 
@@ -158,13 +155,10 @@ class _Constant(jose.JSONDeSerializable, Hashable):  # type: ignore
     def __hash__(self):
         return hash((self.__class__, self.name))
 
-    def __ne__(self, other):
-        return not self == other
-
 
 class Status(_Constant):
     """ACME "status" field."""
-    POSSIBLE_NAMES = {}  # type: dict
+    POSSIBLE_NAMES: dict = {}
 STATUS_UNKNOWN = Status('unknown')
 STATUS_PENDING = Status('pending')
 STATUS_PROCESSING = Status('processing')
@@ -177,8 +171,10 @@ STATUS_DEACTIVATED = Status('deactivated')
 
 class IdentifierType(_Constant):
     """ACME identifier type."""
-    POSSIBLE_NAMES = {}  # type: dict
+    POSSIBLE_NAMES: Dict[str, 'IdentifierType'] = {}
+    # class def ends here
 IDENTIFIER_FQDN = IdentifierType('dns')  # IdentifierDNS in Boulder
+IDENTIFIER_IP = IdentifierType('ip') # IdentifierIP in pebble - not in Boulder yet
 
 
 class Identifier(jose.JSONObjectWithFields):
@@ -195,7 +191,7 @@ class Identifier(jose.JSONObjectWithFields):
 class Directory(jose.JSONDeSerializable):
     """Directory."""
 
-    _REGISTERED_TYPES = {}  # type: dict
+    _REGISTERED_TYPES: Dict[str, Type[Any]] = {}
 
     class Meta(jose.JSONObjectWithFields):
         """Directory Meta."""
@@ -206,8 +202,8 @@ class Directory(jose.JSONDeSerializable):
         external_account_required = jose.Field('externalAccountRequired', omitempty=True)
 
         def __init__(self, **kwargs):
-            kwargs = dict((self._internal_name(k), v) for k, v in kwargs.items())
-            super(Directory.Meta, self).__init__(**kwargs)
+            kwargs = {self._internal_name(k): v for k, v in kwargs.items()}
+            super().__init__(**kwargs)
 
         @property
         def terms_of_service(self):
@@ -217,7 +213,7 @@ class Directory(jose.JSONDeSerializable):
         def __iter__(self):
             # When iterating over fields, use the external name 'terms_of_service' instead of
             # the internal '_terms_of_service'.
-            for name in super(Directory.Meta, self).__iter__():
+            for name in super().__iter__():
                 yield name[1:] if name == '_terms_of_service' else name
 
         def _internal_name(self, name):
@@ -229,7 +225,7 @@ class Directory(jose.JSONDeSerializable):
         return getattr(key, 'resource_type', key)
 
     @classmethod
-    def register(cls, resource_body_cls):
+    def register(cls, resource_body_cls: Type[Any]) -> Type[Any]:
         """Register resource."""
         resource_type = resource_body_cls.resource_type
         assert resource_type not in cls._REGISTERED_TYPES
@@ -275,7 +271,7 @@ class Resource(jose.JSONObjectWithFields):
 class ResourceWithURI(Resource):
     """ACME Resource with URI.
 
-    :ivar unicode uri: Location of the resource.
+    :ivar unicode ~.uri: Location of the resource.
 
     """
     uri = jose.Field('uri')  # no ChallengeResource.uri
@@ -285,7 +281,7 @@ class ResourceBody(jose.JSONObjectWithFields):
     """ACME Resource Body."""
 
 
-class ExternalAccountBinding(object):
+class ExternalAccountBinding:
     """ACME External Account Binding"""
 
     @classmethod
@@ -315,6 +311,9 @@ class Registration(ResourceBody):
     # on new-reg key server ignores 'key' and populates it based on
     # JWS.signature.combined.jwk
     key = jose.Field('key', omitempty=True, decoder=jose.JWK.from_json)
+    # Contact field implements special behavior to allow messages that clear existing
+    # contacts while not expecting the `contact` field when loading from json.
+    # This is implemented in the constructor and *_json methods.
     contact = jose.Field('contact', omitempty=True, default=())
     agreement = jose.Field('agreement', omitempty=True)
     status = jose.Field('status', omitempty=True)
@@ -327,24 +326,73 @@ class Registration(ResourceBody):
 
     @classmethod
     def from_data(cls, phone=None, email=None, external_account_binding=None, **kwargs):
-        """Create registration resource from contact details."""
+        """
+        Create registration resource from contact details.
+
+        The `contact` keyword being passed to a Registration object is meaningful, so
+        this function represents empty iterables in its kwargs by passing on an empty
+        `tuple`.
+        """
+
+        # Note if `contact` was in kwargs.
+        contact_provided = 'contact' in kwargs
+
+        # Pop `contact` from kwargs and add formatted email or phone numbers
         details = list(kwargs.pop('contact', ()))
         if phone is not None:
             details.append(cls.phone_prefix + phone)
         if email is not None:
             details.extend([cls.email_prefix + mail for mail in email.split(',')])
-        kwargs['contact'] = tuple(details)
+
+        # Insert formatted contact information back into kwargs
+        # or insert an empty tuple if `contact` provided.
+        if details or contact_provided:
+            kwargs['contact'] = tuple(details)
 
         if external_account_binding:
             kwargs['external_account_binding'] = external_account_binding
 
         return cls(**kwargs)
 
+    def __init__(self, **kwargs):
+        """Note if the user provides a value for the `contact` member."""
+        if 'contact' in kwargs:
+            # Avoid the __setattr__ used by jose.TypedJSONObjectWithFields
+            object.__setattr__(self, '_add_contact', True)
+        super().__init__(**kwargs)
+
     def _filter_contact(self, prefix):
         return tuple(
             detail[len(prefix):] for detail in self.contact  # pylint: disable=not-an-iterable
             if detail.startswith(prefix))
 
+    def _add_contact_if_appropriate(self, jobj):
+        """
+        The `contact` member of Registration objects should not be required when
+        de-serializing (as it would be if the Fields' `omitempty` flag were `False`), but
+        it should be included in serializations if it was provided.
+
+        :param jobj: Dictionary containing this Registrations' data
+        :type jobj: dict
+
+        :returns: Dictionary containing Registrations data to transmit to the server
+        :rtype: dict
+        """
+        if getattr(self, '_add_contact', False):
+            jobj['contact'] = self.encode('contact')
+
+        return jobj
+
+    def to_partial_json(self):
+        """Modify josepy.JSONDeserializable.to_partial_json()"""
+        jobj = super().to_partial_json()
+        return self._add_contact_if_appropriate(jobj)
+
+    def fields_to_partial_json(self):
+        """Modify josepy.JSONObjectWithFields.fields_to_partial_json()"""
+        jobj = super().fields_to_partial_json()
+        return self._add_contact_if_appropriate(jobj)
+
     @property
     def phones(self):
         """All phones found in the ``contact`` field."""
@@ -413,20 +461,20 @@ class ChallengeBody(ResourceBody):
                        omitempty=True, default=None)
 
     def __init__(self, **kwargs):
-        kwargs = dict((self._internal_name(k), v) for k, v in kwargs.items())
-        super(ChallengeBody, self).__init__(**kwargs)
+        kwargs = {self._internal_name(k): v for k, v in kwargs.items()}
+        super().__init__(**kwargs)
 
     def encode(self, name):
-        return super(ChallengeBody, self).encode(self._internal_name(name))
+        return super().encode(self._internal_name(name))
 
     def to_partial_json(self):
-        jobj = super(ChallengeBody, self).to_partial_json()
+        jobj = super().to_partial_json()
         jobj.update(self.chall.to_partial_json())
         return jobj
 
     @classmethod
     def fields_from_json(cls, jobj):
-        jobj_fields = super(ChallengeBody, cls).fields_from_json(jobj)
+        jobj_fields = super().fields_from_json(jobj)
         jobj_fields['chall'] = challenges.Challenge.from_json(jobj)
         return jobj_fields
 
@@ -441,7 +489,7 @@ class ChallengeBody(ResourceBody):
     def __iter__(self):
         # When iterating over fields, use the external name 'uri' instead of
         # the internal '_uri'.
-        for name in super(ChallengeBody, self).__iter__():
+        for name in super().__iter__():
             yield name[1:] if name == '_uri' else name
 
     def _internal_name(self, name):
@@ -487,7 +535,9 @@ class Authorization(ResourceBody):
     expires = fields.RFC3339Field('expires', omitempty=True)
     wildcard = jose.Field('wildcard', omitempty=True)
 
-    @challenges.decoder
+    # Mypy does not understand the josepy magic happening here, and falsely claims
+    # that challenge is redefined. Let's ignore the type check here.
+    @challenges.decoder  # type: ignore
     def challenges(value):  # pylint: disable=no-self-argument,missing-function-docstring
         return tuple(ChallengeBody.from_json(chall) for chall in value)
 
@@ -566,14 +616,16 @@ class Revocation(ResourceMixin, jose.JSONObjectWithFields):
 class Order(ResourceBody):
     """Order Resource Body.
 
-    :ivar list of .Identifier: List of identifiers for the certificate.
+    :ivar identifiers: List of identifiers for the certificate.
+    :vartype identifiers: `list` of `.Identifier`
     :ivar acme.messages.Status status:
-    :ivar list of str authorizations: URLs of authorizations.
+    :ivar authorizations: URLs of authorizations.
+    :vartype authorizations: `list` of `str`
     :ivar str certificate: URL to download certificate as a fullchain PEM.
     :ivar str finalize: URL to POST to to request issuance once all
         authorizations have "valid" status.
     :ivar datetime.datetime expires: When the order expires.
-    :ivar .Error error: Any error that occurred during finalization, if applicable.
+    :ivar ~.Error error: Any error that occurred during finalization, if applicable.
     """
     identifiers = jose.Field('identifiers', omitempty=True)
     status = jose.Field('status', decoder=Status.from_json,
@@ -584,7 +636,9 @@ class Order(ResourceBody):
     expires = fields.RFC3339Field('expires', omitempty=True)
     error = jose.Field('error', omitempty=True, decoder=Error.from_json)
 
-    @identifiers.decoder
+    # Mypy does not understand the josepy magic happening here, and falsely claims
+    # that identifiers is redefined. Let's ignore the type check here.
+    @identifiers.decoder  # type: ignore
     def identifiers(value):  # pylint: disable=no-self-argument,missing-function-docstring
         return tuple(Identifier.from_json(identifier) for identifier in value)
 
@@ -593,15 +647,20 @@ class OrderResource(ResourceWithURI):
 
     :ivar acme.messages.Order body:
     :ivar str csr_pem: The CSR this Order will be finalized with.
-    :ivar list of acme.messages.AuthorizationResource authorizations:
-        Fully-fetched AuthorizationResource objects.
+    :ivar authorizations: Fully-fetched AuthorizationResource objects.
+    :vartype authorizations: `list` of `acme.messages.AuthorizationResource`
     :ivar str fullchain_pem: The fetched contents of the certificate URL
         produced once the order was finalized, if it's present.
+    :ivar alternative_fullchains_pem: The fetched contents of alternative certificate
+        chain URLs produced once the order was finalized, if present and requested during
+        finalization.
+    :vartype alternative_fullchains_pem: `list` of `str`
     """
     body = jose.Field('body', decoder=Order.from_json)
     csr_pem = jose.Field('csr_pem', omitempty=True)
     authorizations = jose.Field('authorizations')
     fullchain_pem = jose.Field('fullchain_pem', omitempty=True)
+    alternative_fullchains_pem = jose.Field('alternative_fullchains_pem', omitempty=True)
 
 @Directory.register
 class NewOrder(Order):

acme/acme/mixins.py

@@ -1,7 +1,7 @@
 """Useful mixins for Challenge and Resource objects"""
 
 
-class VersionedLEACMEMixin(object):
+class VersionedLEACMEMixin:
     """This mixin stores the version of Let's Encrypt's endpoint being used."""
     @property
     def le_acme_version(self):
@@ -20,7 +20,7 @@ class VersionedLEACMEMixin(object):
             # Required for @property to operate properly. See comment above.
             object.__setattr__(self, key, value)
         else:
-            super(VersionedLEACMEMixin, self).__setattr__(key, value)  # pragma: no cover
+            super().__setattr__(key, value)  # pragma: no cover
 
 
 class ResourceMixin(VersionedLEACMEMixin):
@@ -30,12 +30,12 @@ class ResourceMixin(VersionedLEACMEMixin):
     """
     def to_partial_json(self):
         """See josepy.JSONDeserializable.to_partial_json()"""
-        return _safe_jobj_compliance(super(ResourceMixin, self),
+        return _safe_jobj_compliance(super(),
                                      'to_partial_json', 'resource')
 
     def fields_to_partial_json(self):
         """See josepy.JSONObjectWithFields.fields_to_partial_json()"""
-        return _safe_jobj_compliance(super(ResourceMixin, self),
+        return _safe_jobj_compliance(super(),
                                      'fields_to_partial_json', 'resource')
 
 
@@ -46,12 +46,12 @@ class TypeMixin(VersionedLEACMEMixin):
     """
     def to_partial_json(self):
         """See josepy.JSONDeserializable.to_partial_json()"""
-        return _safe_jobj_compliance(super(TypeMixin, self),
+        return _safe_jobj_compliance(super(),
                                      'to_partial_json', 'type')
 
     def fields_to_partial_json(self):
         """See josepy.JSONObjectWithFields.fields_to_partial_json()"""
-        return _safe_jobj_compliance(super(TypeMixin, self),
+        return _safe_jobj_compliance(super(),
                                      'fields_to_partial_json', 'type')
 
 

acme/acme/standalone.py

@@ -1,17 +1,17 @@
 """Support for standalone client challenge solvers. """
 import collections
 import functools
+import http.client as http_client
+import http.server as BaseHTTPServer
 import logging
 import socket
+import socketserver
 import threading
-
-from six.moves import BaseHTTPServer  # type: ignore
-from six.moves import http_client
-from six.moves import socketserver  # type: ignore
+from typing import List
+from typing import Optional
 
 from acme import challenges
 from acme import crypto_util
-from acme.magic_typing import List
 
 logger = logging.getLogger(__name__)
 
@@ -54,7 +54,7 @@ class ACMEServerMixin:
     allow_reuse_address = True
 
 
-class BaseDualNetworkedServers(object):
+class BaseDualNetworkedServers:
     """Base class for a pair of IPv6 and IPv4 servers that tries to do everything
        it's asked for both servers, but where failures in one server don't
        affect the other.
@@ -64,8 +64,11 @@ class BaseDualNetworkedServers(object):
 
     def __init__(self, ServerClass, server_address, *remaining_args, **kwargs):
         port = server_address[1]
-        self.threads = [] # type: List[threading.Thread]
-        self.servers = [] # type: List[ACMEServerMixin]
+        self.threads: List[threading.Thread] = []
+        self.servers: List[socketserver.BaseServer] = []
+
+        # Preserve socket error for re-raising, if no servers can be started
+        last_socket_err: Optional[socket.error] = None
 
         # Must try True first.
         # Ubuntu, for example, will fail to bind to IPv4 if we've already bound
@@ -83,7 +86,8 @@ class BaseDualNetworkedServers(object):
                 logger.debug(
                     "Successfully bound to %s:%s using %s", new_address[0],
                     new_address[1], "IPv6" if ip_version else "IPv4")
-            except socket.error:
+            except socket.error as e:
+                last_socket_err = e
                 if self.servers:
                     # Already bound using IPv6.
                     logger.debug(
@@ -102,7 +106,10 @@ class BaseDualNetworkedServers(object):
                 # bind to the same port for both servers.
                 port = server.socket.getsockname()[1]
         if not self.servers:
-            raise socket.error("Could not bind to IPv4 or IPv6.")
+            if last_socket_err:
+                raise last_socket_err
+            else: # pragma: no cover
+                raise socket.error("Could not bind to IPv4 or IPv6.")
 
     def serve_forever(self):
         """Wraps socketserver.TCPServer.serve_forever"""
@@ -204,8 +211,24 @@ class HTTP01RequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
 
     def __init__(self, *args, **kwargs):
         self.simple_http_resources = kwargs.pop("simple_http_resources", set())
-        self.timeout = kwargs.pop('timeout', 30)
+        self._timeout = kwargs.pop('timeout', 30)
         BaseHTTPServer.BaseHTTPRequestHandler.__init__(self, *args, **kwargs)
+        self.server: HTTP01Server
+
+    # In parent class BaseHTTPRequestHandler, 'timeout' is a class-level property but we
+    # need to define its value during the initialization phase in HTTP01RequestHandler.
+    # However MyPy does not appreciate that we dynamically shadow a class-level property
+    # with an instance-level property (eg. self.timeout = ... in __init__()). So to make
+    # everyone happy, we statically redefine 'timeout' as a method property, and set the
+    # timeout value in a new internal instance-level property _timeout.
+    @property
+    def timeout(self):
+        """
+        The default timeout this server should apply to requests.
+        :return: timeout to apply
+        :rtype: int
+        """
+        return self._timeout
 
     def log_message(self, format, *args):  # pylint: disable=redefined-builtin
         """Log arbitrary message."""

acme/acme/util.py

@@ -1,7 +1,5 @@
 """ACME utilities."""
-import six
-
 
 def map_keys(dikt, func):
     """Map dictionary keys."""
-    return dict((func(key), value) for key, value in six.iteritems(dikt))
+    return {func(key): value for key, value in dikt.items()}

acme/docs/Makefile

@@ -9,7 +9,7 @@ BUILDDIR      = _build
 
 # User-friendly check for sphinx-build
 ifeq ($(shell which $(SPHINXBUILD) >/dev/null 2>&1; echo $$?), 1)
-$(error The '$(SPHINXBUILD)' command was not found. Make sure you have Sphinx installed, then set the SPHINXBUILD environment variable to point to the full path of the '$(SPHINXBUILD)' executable. Alternatively you can add the directory with the executable to your PATH. If you don't have Sphinx installed, grab it from http://sphinx-doc.org/)
+$(error The '$(SPHINXBUILD)' command was not found. Make sure you have Sphinx installed, then set the SPHINXBUILD environment variable to point to the full path of the '$(SPHINXBUILD)' executable. Alternatively you can add the directory with the executable to your PATH. If you don't have Sphinx installed, grab it from https://www.sphinx-doc.org/)
 endif
 
 # Internal variables.

acme/docs/conf.py

@@ -85,7 +85,9 @@ language = 'en'
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
-exclude_patterns = ['_build']
+exclude_patterns = [
+    '_build',
+]
 
 # The reST default role (used for this markup: `text`) to use for all
 # documents.
@@ -120,7 +122,7 @@ todo_include_todos = False
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 
-# http://docs.readthedocs.org/en/latest/theme.html#how-do-i-use-this-locally-and-on-read-the-docs
+# https://docs.readthedocs.io/en/stable/faq.html#i-want-to-use-the-read-the-docs-theme-locally
 # on_rtd is whether we are on readthedocs.org
 on_rtd = os.environ.get('READTHEDOCS', None) == 'True'
 if not on_rtd:  # only import and set the theme if we're building docs locally

acme/docs/make.bat

@@ -65,7 +65,7 @@ if errorlevel 9009 (
 	echo.may add the Sphinx directory to PATH.
 	echo.
 	echo.If you don't have Sphinx installed, grab it from
-	echo.http://sphinx-doc.org/
+	echo.https://www.sphinx-doc.org/
 	exit /b 1
 )
 

acme/docs/man/jws.rst

@@ -1 +1,3 @@
+:orphan:
+
 .. literalinclude:: ../jws-help.txt

acme/examples/standalone/README

@@ -1,2 +0,0 @@
-python -m acme.standalone -p 1234
-curl -k https://localhost:1234

acme/examples/standalone/localhost/cert.pem

@@ -1 +0,0 @@
-../../../acme/testdata/rsa2048_cert.pem

acme/examples/standalone/localhost/key.pem

@@ -1 +0,0 @@
-../../../acme/testdata/rsa2048_key.pem

acme/setup.py

@@ -1,45 +1,19 @@
-from distutils.version import StrictVersion
 import sys
 
-from setuptools import __version__ as setuptools_version
 from setuptools import find_packages
 from setuptools import setup
-from setuptools.command.test import test as TestCommand
 
-version = '1.6.0.dev0'
+version = '1.20.0.dev0'
 
-# Please update tox.ini when modifying dependency version requirements
 install_requires = [
-    # load_pem_private/public_key (>=0.6)
-    # rsa_recover_prime_factors (>=0.8)
-    'cryptography>=1.2.3',
-    # formerly known as acme.jose:
-    # 1.1.0+ is required to avoid the warnings described at
-    # https://github.com/certbot/josepy/issues/13.
-    'josepy>=1.1.0',
-    # Connection.set_tlsext_host_name (>=0.13)
-    'PyOpenSSL>=0.13.1',
+    'cryptography>=2.1.4',
+    'josepy>=1.9.0',
+    'PyOpenSSL>=17.3.0',
     'pyrfc3339',
     'pytz',
-    'requests[security]>=2.6.0',  # security extras added in 2.4.1
+    'requests>=2.14.2',
     'requests-toolbelt>=0.3.0',
-    'setuptools',
-    'six>=1.9.0',  # needed for python_2_unicode_compatible
-]
-
-setuptools_known_environment_markers = (StrictVersion(setuptools_version) >= StrictVersion('36.2'))
-if setuptools_known_environment_markers:
-    install_requires.append('mock ; python_version < "3.3"')
-elif 'bdist_wheel' in sys.argv[1:]:
-    raise RuntimeError('Error, you are trying to build certbot wheels using an old version '
-                       'of setuptools. Version 36.2+ of setuptools is required.')
-elif sys.version_info < (3,3):
-    install_requires.append('mock')
-
-dev_extras = [
-    'pytest',
-    'pytest-xdist',
-    'tox',
+    'setuptools>=39.0.1',
 ]
 
 docs_extras = [
@@ -47,21 +21,10 @@ docs_extras = [
     'sphinx_rtd_theme',
 ]
 
-
-class PyTest(TestCommand):
-    user_options = []
-
-    def initialize_options(self):
-        TestCommand.initialize_options(self)
-        self.pytest_args = ''
-
-    def run_tests(self):
-        import shlex
-        # import here, cause outside the eggs aren't loaded
-        import pytest
-        errno = pytest.main(shlex.split(self.pytest_args))
-        sys.exit(errno)
-
+test_extras = [
+    'pytest',
+    'pytest-xdist',
+]
 
 setup(
     name='acme',
@@ -69,21 +32,19 @@ setup(
     description='ACME protocol implementation in Python',
     url='https://github.com/letsencrypt/letsencrypt',
     author="Certbot Project",
-    author_email='client-dev@letsencrypt.org',
+    author_email='certbot-dev@eff.org',
     license='Apache License 2.0',
-    python_requires='>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*',
+    python_requires='>=3.6',
     classifiers=[
         'Development Status :: 5 - Production/Stable',
         'Intended Audience :: Developers',
         'License :: OSI Approved :: Apache Software License',
         'Programming Language :: Python',
-        'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
+        'Programming Language :: Python :: 3.9',
         'Topic :: Internet :: WWW/HTTP',
         'Topic :: Security',
     ],
@@ -92,10 +53,7 @@ setup(
     include_package_data=True,
     install_requires=install_requires,
     extras_require={
-        'dev': dev_extras,
         'docs': docs_extras,
+        'test': test_extras,
     },
-    test_suite='acme',
-    tests_require=["pytest"],
-    cmdclass={"test": PyTest},
 )

acme/tests/challenges_test.py

@@ -1,14 +1,11 @@
 """Tests for acme.challenges."""
+import urllib.parse as urllib_parse
 import unittest
+from unittest import mock
 
 import josepy as jose
 import OpenSSL
-try:
-    import mock
-except ImportError: # pragma: no cover
-    from unittest import mock # type: ignore
 import requests
-from six.moves.urllib import parse as urllib_parse
 
 from acme import errors
 
@@ -295,7 +292,7 @@ class TLSALPN01ResponseTest(unittest.TestCase):
 
     def test_gen_verify_cert_gen_key(self):
         cert, key = self.response.gen_cert(self.domain)
-        self.assertTrue(isinstance(key, OpenSSL.crypto.PKey))
+        self.assertIsInstance(key, OpenSSL.crypto.PKey)
         self.assertTrue(self.response.verify_cert(self.domain, cert))
 
     def test_verify_bad_cert(self):
@@ -434,7 +431,7 @@ class DNSTest(unittest.TestCase):
             mock_gen.return_value = mock.sentinel.validation
             response = self.msg.gen_response(KEY)
         from acme.challenges import DNSResponse
-        self.assertTrue(isinstance(response, DNSResponse))
+        self.assertIsInstance(response, DNSResponse)
         self.assertEqual(response.validation, mock.sentinel.validation)
 
     def test_validation_domain_name(self):

acme/tests/client_test.py

@@ -2,17 +2,16 @@
 # pylint: disable=too-many-lines
 import copy
 import datetime
+import http.client as http_client
+import ipaddress
 import json
 import unittest
+from typing import Dict
+from unittest import mock
 
 import josepy as jose
-try:
-    import mock
-except ImportError: # pragma: no cover
-    from unittest import mock # type: ignore
 import OpenSSL
 import requests
-from six.moves import http_client  # pylint: disable=import-error
 
 from acme import challenges
 from acme import errors
@@ -25,6 +24,7 @@ import test_util
 CERT_DER = test_util.load_vector('cert.der')
 CERT_SAN_PEM = test_util.load_vector('cert-san.pem')
 CSR_SAN_PEM = test_util.load_vector('csr-san.pem')
+CSR_MIXED_PEM = test_util.load_vector('csr-mixed.pem')
 KEY = jose.JWKRSA.load(test_util.load_vector('rsa512_key.pem'))
 KEY2 = jose.JWKRSA.load(test_util.load_vector('rsa256_key.pem'))
 
@@ -64,7 +64,7 @@ class ClientTestBase(unittest.TestCase):
         self.contact = ('mailto:cert-admin@example.com', 'tel:+12025551212')
         reg = messages.Registration(
             contact=self.contact, key=KEY.public_key())
-        the_arg = dict(reg)  # type: Dict
+        the_arg: Dict = dict(reg)
         self.new_reg = messages.NewRegistration(**the_arg)
         self.regr = messages.RegistrationResource(
             body=reg, uri='https://www.letsencrypt-demo.org/acme/reg/1')
@@ -92,7 +92,7 @@ class BackwardsCompatibleClientV2Test(ClientTestBase):
     """Tests for  acme.client.BackwardsCompatibleClientV2."""
 
     def setUp(self):
-        super(BackwardsCompatibleClientV2Test, self).setUp()
+        super().setUp()
         # contains a loaded cert
         self.certr = messages.CertificateResource(
             body=messages_test.CERT)
@@ -263,7 +263,7 @@ class BackwardsCompatibleClientV2Test(ClientTestBase):
         with mock.patch('acme.client.ClientV2') as mock_client:
             client = self._init()
             client.finalize_order(mock_orderr, mock_deadline)
-            mock_client().finalize_order.assert_called_once_with(mock_orderr, mock_deadline)
+            mock_client().finalize_order.assert_called_once_with(mock_orderr, mock_deadline, False)
 
     def test_revoke(self):
         self.response.json.return_value = DIRECTORY_V1.to_json()
@@ -321,7 +321,7 @@ class ClientTest(ClientTestBase):
     """Tests for acme.client.Client."""
 
     def setUp(self):
-        super(ClientTest, self).setUp()
+        super().setUp()
 
         self.directory = DIRECTORY_V1
 
@@ -606,8 +606,8 @@ class ClientTest(ClientTestBase):
             # make sure that max_attempts is per-authorization, rather
             # than global
             max_attempts=max(len(authzrs[0].retries), len(authzrs[1].retries)))
-        self.assertTrue(cert[0] is csr)
-        self.assertTrue(cert[1] is updated_authzrs)
+        self.assertIs(cert[0], csr)
+        self.assertIs(cert[1], updated_authzrs)
         self.assertEqual(updated_authzrs[0].uri, 'a...')
         self.assertEqual(updated_authzrs[1].uri, 'b.')
         self.assertEqual(updated_authzrs[0].times, [
@@ -643,7 +643,7 @@ class ClientTest(ClientTestBase):
         authzr = self.client.deactivate_authorization(self.authzr)
         self.assertEqual(authzb, authzr.body)
         self.assertEqual(self.client.net.post.call_count, 1)
-        self.assertTrue(self.authzr.uri in self.net.post.call_args_list[0][0])
+        self.assertIn(self.authzr.uri, self.net.post.call_args_list[0][0])
 
     def test_check_cert(self):
         self.response.headers['Location'] = self.certr.uri
@@ -702,7 +702,7 @@ class ClientTest(ClientTestBase):
 
     def test_revocation_payload(self):
         obj = messages.Revocation(certificate=self.certr.body, reason=self.rsn)
-        self.assertTrue('reason' in obj.to_partial_json().keys())
+        self.assertIn('reason', obj.to_partial_json().keys())
         self.assertEqual(self.rsn, obj.to_partial_json()['reason'])
 
     def test_revoke_bad_status_raises_error(self):
@@ -718,7 +718,7 @@ class ClientV2Test(ClientTestBase):
     """Tests for acme.client.ClientV2."""
 
     def setUp(self):
-        super(ClientV2Test, self).setUp()
+        super().setUp()
 
         self.directory = DIRECTORY_V2
 
@@ -742,7 +742,7 @@ class ClientV2Test(ClientTestBase):
         self.orderr = messages.OrderResource(
             body=self.order,
             uri='https://www.letsencrypt-demo.org/acme/acct/1/order/1',
-            authorizations=[self.authzr, self.authzr2], csr_pem=CSR_SAN_PEM)
+            authorizations=[self.authzr, self.authzr2], csr_pem=CSR_MIXED_PEM)
 
     def test_new_account(self):
         self.response.status_code = http_client.CREATED
@@ -772,7 +772,7 @@ class ClientV2Test(ClientTestBase):
 
         with mock.patch('acme.client.ClientV2._post_as_get') as mock_post_as_get:
             mock_post_as_get.side_effect = (authz_response, authz_response2)
-            self.assertEqual(self.client.new_order(CSR_SAN_PEM), self.orderr)
+            self.assertEqual(self.client.new_order(CSR_MIXED_PEM), self.orderr)
 
     @mock.patch('acme.client.datetime')
     def test_poll_and_finalize(self, mock_datetime):
@@ -842,6 +842,32 @@ class ClientV2Test(ClientTestBase):
         deadline = datetime.datetime.now() - datetime.timedelta(seconds=60)
         self.assertRaises(errors.TimeoutError, self.client.finalize_order, self.orderr, deadline)
 
+    def test_finalize_order_alt_chains(self):
+        updated_order = self.order.update(
+            certificate='https://www.letsencrypt-demo.org/acme/cert/',
+        )
+        updated_orderr = self.orderr.update(body=updated_order,
+                                            fullchain_pem=CERT_SAN_PEM,
+                                            alternative_fullchains_pem=[CERT_SAN_PEM,
+                                                                        CERT_SAN_PEM])
+        self.response.json.return_value = updated_order.to_json()
+        self.response.text = CERT_SAN_PEM
+        self.response.headers['Link'] ='<https://example.com/acme/cert/1>;rel="alternate", ' + \
+            '<https://example.com/dir>;rel="index", ' + \
+            '<https://example.com/acme/cert/2>;title="foo";rel="alternate"'
+
+        deadline = datetime.datetime(9999, 9, 9)
+        resp = self.client.finalize_order(self.orderr, deadline, fetch_alternative_chains=True)
+        self.net.post.assert_any_call('https://example.com/acme/cert/1',
+                                      mock.ANY, acme_version=2, new_nonce_url=mock.ANY)
+        self.net.post.assert_any_call('https://example.com/acme/cert/2',
+                                      mock.ANY, acme_version=2, new_nonce_url=mock.ANY)
+        self.assertEqual(resp, updated_orderr)
+
+        del self.response.headers['Link']
+        resp = self.client.finalize_order(self.orderr, deadline, fetch_alternative_chains=True)
+        self.assertEqual(resp, updated_orderr.update(alternative_fullchains_pem=[]))
+
     def test_revoke(self):
         self.client.revoke(messages_test.CERT, self.rsn)
         self.net.post.assert_called_once_with(
@@ -853,9 +879,9 @@ class ClientV2Test(ClientTestBase):
         self.response.headers['Location'] = self.regr.uri
         self.response.json.return_value = self.regr.body.to_json()
         self.assertEqual(self.regr, self.client.update_registration(self.regr))
-        self.assertNotEqual(self.client.net.account, None)
+        self.assertIsNotNone(self.client.net.account)
         self.assertEqual(self.client.net.post.call_count, 2)
-        self.assertTrue(DIRECTORY_V2.newAccount in self.net.post.call_args_list[0][0])
+        self.assertIn(DIRECTORY_V2.newAccount, self.net.post.call_args_list[0][0])
 
         self.response.json.return_value = self.regr.body.update(
             contact=()).to_json()
@@ -919,7 +945,7 @@ class ClientNetworkTest(unittest.TestCase):
         self.response.links = {}
 
     def test_init(self):
-        self.assertTrue(self.net.verify_ssl is self.verify_ssl)
+        self.assertIs(self.net.verify_ssl, self.verify_ssl)
 
     def test_wrap_in_jws(self):
         # pylint: disable=protected-access
@@ -1161,7 +1187,7 @@ class ClientNetworkWithMockedResponseTest(unittest.TestCase):
 
         def send_request(*args, **kwargs):
             # pylint: disable=unused-argument,missing-docstring
-            self.assertFalse("new_nonce_url" in kwargs)
+            self.assertNotIn("new_nonce_url", kwargs)
             method = args[0]
             uri = args[1]
             if method == 'HEAD' and uri != "new_nonce_uri":
@@ -1306,7 +1332,7 @@ class ClientNetworkSourceAddressBindingTest(unittest.TestCase):
         from acme.client import ClientNetwork
         net = ClientNetwork(key=None, alg=None, source_address=self.source_address)
         for adapter in net.session.adapters.values():
-            self.assertTrue(self.source_address in adapter.source_address)
+            self.assertIn(self.source_address, adapter.source_address)
 
     def test_behavior_assumption(self):
         """This is a test that guardrails the HTTPAdapter behavior so that if the default for
@@ -1316,7 +1342,7 @@ class ClientNetworkSourceAddressBindingTest(unittest.TestCase):
         # test should fail if the default adapter type is changed by requests
         net = ClientNetwork(key=None, alg=None)
         session = requests.Session()
-        for scheme in session.adapters.keys():
+        for scheme in session.adapters:
             client_network_adapter = net.session.adapters.get(scheme)
             default_adapter = session.adapters.get(scheme)
             self.assertEqual(client_network_adapter.__class__, default_adapter.__class__)

acme/tests/crypto_util_test.py

@@ -1,14 +1,15 @@
 """Tests for acme.crypto_util."""
 import itertools
+import ipaddress
 import socket
+import socketserver
 import threading
 import time
 import unittest
+from typing import List
 
 import josepy as jose
 import OpenSSL
-import six
-from six.moves import socketserver  # type: ignore  # pylint: disable=import-error
 
 from acme import errors
 import test_util
@@ -27,8 +28,6 @@ class SSLSocketAndProbeSNITest(unittest.TestCase):
 
         class _TestServer(socketserver.TCPServer):
 
-            # six.moves.* | pylint: disable=attribute-defined-outside-init,no-init
-
             def server_bind(self):  # pylint: disable=missing-docstring
                 self.socket = SSLSocket(socket.socket(),
                         certs)
@@ -62,7 +61,6 @@ class SSLSocketAndProbeSNITest(unittest.TestCase):
         self.assertRaises(errors.Error, self._probe, b'bar')
 
     def test_probe_connection_error(self):
-        # pylint has a hard time with six
         self.server.server_close()
         original_timeout = socket.getdefaulttimeout()
         try:
@@ -111,7 +109,6 @@ class PyOpenSSLCertOrReqAllNamesTest(unittest.TestCase):
 class PyOpenSSLCertOrReqSANTest(unittest.TestCase):
     """Test for acme.crypto_util._pyopenssl_cert_or_req_san."""
 
-
     @classmethod
     def _call(cls, loader, name):
         # pylint: disable=protected-access
@@ -121,9 +118,9 @@ class PyOpenSSLCertOrReqSANTest(unittest.TestCase):
     @classmethod
     def _get_idn_names(cls):
         """Returns expected names from '{cert,csr}-idnsans.pem'."""
-        chars = [six.unichr(i) for i in itertools.chain(range(0x3c3, 0x400),
-                                                        range(0x641, 0x6fc),
-                                                        range(0x1820, 0x1877))]
+        chars = [chr(i) for i in itertools.chain(range(0x3c3, 0x400),
+                                                 range(0x641, 0x6fc),
+                                                 range(0x1820, 0x1877))]
         return [''.join(chars[i: i + 45]) + '.invalid'
                 for i in range(0, len(chars), 45)]
 
@@ -177,24 +174,73 @@ class PyOpenSSLCertOrReqSANTest(unittest.TestCase):
                          ['chicago-cubs.venafi.example', 'cubs.venafi.example'])
 
 
+class PyOpenSSLCertOrReqSANIPTest(unittest.TestCase):
+    """Test for acme.crypto_util._pyopenssl_cert_or_req_san_ip."""
 
-class RandomSnTest(unittest.TestCase):
-    """Test for random certificate serial numbers."""
+    @classmethod
+    def _call(cls, loader, name):
+        # pylint: disable=protected-access
+        from acme.crypto_util import _pyopenssl_cert_or_req_san_ip
+        return _pyopenssl_cert_or_req_san_ip(loader(name))
+
+    def _call_cert(self, name):
+        return self._call(test_util.load_cert, name)
+
+    def _call_csr(self, name):
+        return self._call(test_util.load_csr, name)
+
+    def test_cert_no_sans(self):
+        self.assertEqual(self._call_cert('cert.pem'), [])
+
+    def test_csr_no_sans(self):
+        self.assertEqual(self._call_csr('csr-nosans.pem'), [])
+
+    def test_cert_domain_sans(self):
+        self.assertEqual(self._call_cert('cert-san.pem'), [])
+
+    def test_csr_domain_sans(self):
+        self.assertEqual(self._call_csr('csr-san.pem'), [])
+
+    def test_cert_ip_two_sans(self):
+        self.assertEqual(self._call_cert('cert-ipsans.pem'), ['192.0.2.145', '203.0.113.1'])
+
+    def test_csr_ip_two_sans(self):
+        self.assertEqual(self._call_csr('csr-ipsans.pem'), ['192.0.2.145', '203.0.113.1'])
+
+    def test_csr_ipv6_sans(self):
+        self.assertEqual(self._call_csr('csr-ipv6sans.pem'),
+                         ['0:0:0:0:0:0:0:1', 'A3BE:32F3:206E:C75D:956:CEE:9858:5EC5'])
+
+    def test_cert_ipv6_sans(self):
+        self.assertEqual(self._call_cert('cert-ipv6sans.pem'),
+                         ['0:0:0:0:0:0:0:1', 'A3BE:32F3:206E:C75D:956:CEE:9858:5EC5'])
+
+
+class GenSsCertTest(unittest.TestCase):
+    """Test for gen_ss_cert (generation of self-signed cert)."""
 
 
     def setUp(self):
         self.cert_count = 5
-        self.serial_num = [] # type: List[int]
+        self.serial_num: List[int] = []
         self.key = OpenSSL.crypto.PKey()
         self.key.generate_key(OpenSSL.crypto.TYPE_RSA, 2048)
 
     def test_sn_collisions(self):
         from acme.crypto_util import gen_ss_cert
-
         for _ in range(self.cert_count):
-            cert = gen_ss_cert(self.key, ['dummy'], force_san=True)
+            cert = gen_ss_cert(self.key, ['dummy'], force_san=True,
+                               ips=[ipaddress.ip_address("10.10.10.10")])
             self.serial_num.append(cert.get_serial_number())
-        self.assertTrue(len(set(self.serial_num)) > 1)
+        self.assertGreaterEqual(len(set(self.serial_num)), self.cert_count)
+
+
+    def test_no_name(self):
+        from acme.crypto_util import gen_ss_cert
+        with self.assertRaises(AssertionError):
+            gen_ss_cert(self.key, ips=[ipaddress.ip_address("1.1.1.1")])
+            gen_ss_cert(self.key)
+
 
 class MakeCSRTest(unittest.TestCase):
     """Test for standalone functions."""
@@ -209,8 +255,8 @@ class MakeCSRTest(unittest.TestCase):
 
     def test_make_csr(self):
         csr_pem = self._call_with_key(["a.example", "b.example"])
-        self.assertTrue(b'--BEGIN CERTIFICATE REQUEST--' in csr_pem)
-        self.assertTrue(b'--END CERTIFICATE REQUEST--' in csr_pem)
+        self.assertIn(b'--BEGIN CERTIFICATE REQUEST--', csr_pem)
+        self.assertIn(b'--END CERTIFICATE REQUEST--', csr_pem)
         csr = OpenSSL.crypto.load_certificate_request(
             OpenSSL.crypto.FILETYPE_PEM, csr_pem)
         # In pyopenssl 0.13 (used with TOXENV=py27-oldest), csr objects don't
@@ -226,6 +272,27 @@ class MakeCSRTest(unittest.TestCase):
                 ).get_data(),
             )
 
+    def test_make_csr_ip(self):
+        csr_pem = self._call_with_key(["a.example"], False, [ipaddress.ip_address('127.0.0.1'), ipaddress.ip_address('::1')])
+        self.assertIn(b'--BEGIN CERTIFICATE REQUEST--' , csr_pem)
+        self.assertIn(b'--END CERTIFICATE REQUEST--' , csr_pem)
+        csr = OpenSSL.crypto.load_certificate_request(
+            OpenSSL.crypto.FILETYPE_PEM, csr_pem)
+        # In pyopenssl 0.13 (used with TOXENV=py27-oldest), csr objects don't
+        # have a get_extensions() method, so we skip this test if the method
+        # isn't available.
+        if hasattr(csr, 'get_extensions'):
+            self.assertEqual(len(csr.get_extensions()), 1)
+            self.assertEqual(csr.get_extensions()[0].get_data(),
+                             OpenSSL.crypto.X509Extension(
+                                 b'subjectAltName',
+                                 critical=False,
+                                 value=b'DNS:a.example, IP:127.0.0.1, IP:::1',
+                             ).get_data(),
+                             )
+            # for IP san it's actually need to be octet-string,
+            # but somewhere downstream thankfully handle it for us
+
     def test_make_csr_must_staple(self):
         csr_pem = self._call_with_key(["a.example"], must_staple=True)
         csr = OpenSSL.crypto.load_certificate_request(
@@ -244,6 +311,9 @@ class MakeCSRTest(unittest.TestCase):
             self.assertEqual(len(must_staple_exts), 1,
                 "Expected exactly one Must Staple extension")
 
+    def test_make_csr_without_hostname(self):
+        self.assertRaises(ValueError, self._call_with_key)
+
 
 class DumpPyopensslChainTest(unittest.TestCase):
     """Test for dump_pyopenssl_chain."""

acme/tests/errors_test.py

@@ -1,10 +1,6 @@
 """Tests for acme.errors."""
 import unittest
-
-try:
-    import mock
-except ImportError: # pragma: no cover
-    from unittest import mock # type: ignore
+from unittest import mock
 
 
 class BadNonceTest(unittest.TestCase):
@@ -28,8 +24,8 @@ class MissingNonceTest(unittest.TestCase):
         self.error = MissingNonce(self.response)
 
     def test_str(self):
-        self.assertTrue("FOO" in str(self.error))
-        self.assertTrue("{}" in str(self.error))
+        self.assertIn("FOO", str(self.error))
+        self.assertIn("{}", str(self.error))
 
 
 class PollErrorTest(unittest.TestCase):

acme/tests/jws_test.py

@@ -48,7 +48,7 @@ class JWSTest(unittest.TestCase):
         self.assertEqual(jws.signature.combined.nonce, self.nonce)
         self.assertEqual(jws.signature.combined.url, self.url)
         self.assertEqual(jws.signature.combined.kid, self.kid)
-        self.assertEqual(jws.signature.combined.jwk, None)
+        self.assertIsNone(jws.signature.combined.jwk)
         # TODO: check that nonce is in protected header
 
         self.assertEqual(jws, JWS.from_json(jws.to_json()))
@@ -58,7 +58,7 @@ class JWSTest(unittest.TestCase):
         jws = JWS.sign(payload=b'foo', key=self.privkey,
                        alg=jose.RS256, nonce=self.nonce,
                        url=self.url)
-        self.assertEqual(jws.signature.combined.kid, None)
+        self.assertIsNone(jws.signature.combined.kid)
         self.assertEqual(jws.signature.combined.jwk, self.pubkey)
 
 

acme/tests/magic_typing_test.py

@@ -1,11 +1,8 @@
 """Tests for acme.magic_typing."""
 import sys
 import unittest
-
-try:
-    import mock
-except ImportError: # pragma: no cover
-    from unittest import mock # type: ignore
+import warnings
+from unittest import mock
 
 
 class MagicTypingTest(unittest.TestCase):
@@ -13,32 +10,21 @@ class MagicTypingTest(unittest.TestCase):
     def test_import_success(self):
         try:
             import typing as temp_typing
-        except ImportError: # pragma: no cover
-            temp_typing = None # pragma: no cover
+        except ImportError:  # pragma: no cover
+            temp_typing = None  # pragma: no cover
         typing_class_mock = mock.MagicMock()
         text_mock = mock.MagicMock()
         typing_class_mock.Text = text_mock
         sys.modules['typing'] = typing_class_mock
         if 'acme.magic_typing' in sys.modules:
-            del sys.modules['acme.magic_typing'] # pragma: no cover
-        from acme.magic_typing import Text
+            del sys.modules['acme.magic_typing']  # pragma: no cover
+        with warnings.catch_warnings():
+            warnings.filterwarnings("ignore", category=DeprecationWarning)
+            from acme.magic_typing import Text
         self.assertEqual(Text, text_mock)
         del sys.modules['acme.magic_typing']
         sys.modules['typing'] = temp_typing
 
-    def test_import_failure(self):
-        try:
-            import typing as temp_typing
-        except ImportError: # pragma: no cover
-            temp_typing = None # pragma: no cover
-        sys.modules['typing'] = None
-        if 'acme.magic_typing' in sys.modules:
-            del sys.modules['acme.magic_typing'] # pragma: no cover
-        from acme.magic_typing import Text
-        self.assertTrue(Text is None)
-        del sys.modules['acme.magic_typing']
-        sys.modules['typing'] = temp_typing
-
 
 if __name__ == '__main__':
     unittest.main()  # pragma: no cover

acme/tests/messages_test.py

@@ -1,11 +1,9 @@
 """Tests for acme.messages."""
+from typing import Dict
 import unittest
+from unittest import mock
 
 import josepy as jose
-try:
-    import mock
-except ImportError: # pragma: no cover
-    from unittest import mock # type: ignore
 
 from acme import challenges
 import test_util
@@ -43,13 +41,13 @@ class ErrorTest(unittest.TestCase):
 
     def test_description(self):
         self.assertEqual('The request message was malformed', self.error.description)
-        self.assertTrue(self.error_custom.description is None)
+        self.assertIsNone(self.error_custom.description)
 
     def test_code(self):
         from acme.messages import Error
         self.assertEqual('malformed', self.error.code)
-        self.assertEqual(None, self.error_custom.code)
-        self.assertEqual(None, Error().code)
+        self.assertIsNone(self.error_custom.code)
+        self.assertIsNone(Error().code)
 
     def test_is_acme_error(self):
         from acme.messages import is_acme_error, Error
@@ -84,7 +82,7 @@ class ConstantTest(unittest.TestCase):
         from acme.messages import _Constant
 
         class MockConstant(_Constant):  # pylint: disable=missing-docstring
-            POSSIBLE_NAMES = {} # type: Dict
+            POSSIBLE_NAMES: Dict = {}
 
         self.MockConstant = MockConstant  # pylint: disable=invalid-name
         self.const_a = MockConstant('a')
@@ -108,11 +106,11 @@ class ConstantTest(unittest.TestCase):
 
     def test_equality(self):
         const_a_prime = self.MockConstant('a')
-        self.assertFalse(self.const_a == self.const_b)
-        self.assertTrue(self.const_a == const_a_prime)
+        self.assertNotEqual(self.const_a, self.const_b)
+        self.assertEqual(self.const_a, const_a_prime)
 
-        self.assertTrue(self.const_a != self.const_b)
-        self.assertFalse(self.const_a != const_a_prime)
+        self.assertNotEqual(self.const_a, self.const_b)
+        self.assertEqual(self.const_a, const_a_prime)
 
 
 class DirectoryTest(unittest.TestCase):
@@ -254,6 +252,19 @@ class RegistrationTest(unittest.TestCase):
         from acme.messages import Registration
         hash(Registration.from_json(self.jobj_from))
 
+    def test_default_not_transmitted(self):
+        from acme.messages import NewRegistration
+        empty_new_reg = NewRegistration()
+        new_reg_with_contact = NewRegistration(contact=())
+
+        self.assertEqual(empty_new_reg.contact, ())
+        self.assertEqual(new_reg_with_contact.contact, ())
+
+        self.assertNotIn('contact', empty_new_reg.to_partial_json())
+        self.assertNotIn('contact', empty_new_reg.fields_to_partial_json())
+        self.assertIn('contact', new_reg_with_contact.to_partial_json())
+        self.assertIn('contact', new_reg_with_contact.fields_to_partial_json())
+
 
 class UpdateRegistrationTest(unittest.TestCase):
     """Tests for acme.messages.UpdateRegistration."""
@@ -395,7 +406,7 @@ class AuthorizationResourceTest(unittest.TestCase):
         authzr = AuthorizationResource(
             uri=mock.sentinel.uri,
             body=mock.sentinel.body)
-        self.assertTrue(isinstance(authzr, jose.JSONDeSerializable))
+        self.assertIsInstance(authzr, jose.JSONDeSerializable)
 
 
 class CertificateRequestTest(unittest.TestCase):
@@ -406,7 +417,7 @@ class CertificateRequestTest(unittest.TestCase):
         self.req = CertificateRequest(csr=CSR)
 
     def test_json_de_serializable(self):
-        self.assertTrue(isinstance(self.req, jose.JSONDeSerializable))
+        self.assertIsInstance(self.req, jose.JSONDeSerializable)
         from acme.messages import CertificateRequest
         self.assertEqual(
             self.req, CertificateRequest.from_json(self.req.to_json()))
@@ -422,7 +433,7 @@ class CertificateResourceTest(unittest.TestCase):
             cert_chain_uri=mock.sentinel.cert_chain_uri)
 
     def test_json_de_serializable(self):
-        self.assertTrue(isinstance(self.certr, jose.JSONDeSerializable))
+        self.assertIsInstance(self.certr, jose.JSONDeSerializable)
         from acme.messages import CertificateResource
         self.assertEqual(
             self.certr, CertificateResource.from_json(self.certr.to_json()))

acme/tests/standalone_test.py

@@ -1,16 +1,14 @@
 """Tests for acme.standalone."""
+import http.client as http_client
 import socket
+import socketserver
 import threading
 import unittest
+from typing import Set
+from unittest import mock
 
 import josepy as jose
-try:
-    import mock
-except ImportError: # pragma: no cover
-    from unittest import mock # type: ignore
 import requests
-from six.moves import http_client  # pylint: disable=import-error
-from six.moves import socketserver  # type: ignore  # pylint: disable=import-error
 
 from acme import challenges
 from acme import crypto_util
@@ -44,7 +42,7 @@ class HTTP01ServerTest(unittest.TestCase):
     def setUp(self):
         self.account_key = jose.JWK.load(
             test_util.load_vector('rsa1024_key.pem'))
-        self.resources = set() # type: Set
+        self.resources: Set = set()
 
         from acme.standalone import HTTP01Server
         self.server = HTTP01Server(('', 0), resources=self.resources)
@@ -192,12 +190,18 @@ class BaseDualNetworkedServersTest(unittest.TestCase):
 
     @mock.patch("socket.socket.bind")
     def test_fail_to_bind(self, mock_bind):
-        mock_bind.side_effect = socket.error
+        from errno import EADDRINUSE
         from acme.standalone import BaseDualNetworkedServers
-        self.assertRaises(socket.error, BaseDualNetworkedServers,
-                          BaseDualNetworkedServersTest.SingleProtocolServer,
-                          ('', 0),
-                          socketserver.BaseRequestHandler)
+
+        mock_bind.side_effect = socket.error(EADDRINUSE, "Fake addr in use error")
+
+        with self.assertRaises(socket.error) as em:
+            BaseDualNetworkedServers(
+                BaseDualNetworkedServersTest.SingleProtocolServer,
+                ('', 0), socketserver.BaseRequestHandler)
+
+        self.assertEqual(em.exception.errno, EADDRINUSE)
+
 
     def test_ports_equal(self):
         from acme.standalone import BaseDualNetworkedServers
@@ -221,7 +225,7 @@ class HTTP01DualNetworkedServersTest(unittest.TestCase):
     def setUp(self):
         self.account_key = jose.JWK.load(
             test_util.load_vector('rsa1024_key.pem'))
-        self.resources = set() # type: Set
+        self.resources: Set = set()
 
         from acme.standalone import HTTP01DualNetworkedServers
         self.servers = HTTP01DualNetworkedServers(('', 0), resources=self.resources)

acme/tests/testdata/cert-ipsans.pem

@@ -0,0 +1,21 @@
+-----BEGIN CERTIFICATE-----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=
+-----END CERTIFICATE-----

acme/tests/testdata/cert-ipv6sans.pem

@@ -0,0 +1,22 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----

acme/tests/testdata/csr-ipsans.pem

@@ -0,0 +1,16 @@
+-----BEGIN CERTIFICATE REQUEST-----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+-----END CERTIFICATE REQUEST-----

acme/tests/testdata/csr-ipv6sans.pem

@@ -0,0 +1,16 @@
+-----BEGIN CERTIFICATE REQUEST-----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+-----END CERTIFICATE REQUEST-----

acme/tests/testdata/csr-mixed.pem

@@ -0,0 +1,16 @@
+-----BEGIN CERTIFICATE REQUEST-----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+-----END CERTIFICATE REQUEST-----

certbot-apache/certbot_apache/_internal/apache_util.py

@@ -9,7 +9,6 @@ import pkg_resources
 
 from certbot import errors
 from certbot import util
-
 from certbot.compat import os
 
 logger = logging.getLogger(__name__)
@@ -154,13 +153,10 @@ def parse_defines(apachectl):
         return {}
 
     for match in matches:
-        if match.count("=") > 1:
-            logger.error("Unexpected number of equal signs in "
-                         "runtime config dump.")
-            raise errors.PluginError(
-                "Error parsing Apache runtime variables")
-        parts = match.partition("=")
-        variables[parts[0]] = parts[2]
+        # Value could also contain = so split only once
+        parts = match.split('=', 1)
+        value = parts[1] if len(parts) == 2 else ''
+        variables[parts[0]] = value
 
     return variables
 
@@ -221,12 +217,14 @@ def _get_runtime_cfg(command):
 
     """
     try:
-        proc = subprocess.Popen(
+        proc = subprocess.run(
             command,
             stdout=subprocess.PIPE,
             stderr=subprocess.PIPE,
-            universal_newlines=True)
-        stdout, stderr = proc.communicate()
+            universal_newlines=True,
+            check=False,
+            env=util.env_no_snap_for_external_calls())
+        stdout, stderr = proc.stdout, proc.stderr
 
     except (OSError, ValueError):
         logger.error(

certbot-apache/certbot_apache/_internal/apacheparser.py

@@ -1,4 +1,5 @@
 """ apacheconfig implementation of the ParserNode interfaces """
+from typing import Tuple
 
 from certbot_apache._internal import assertions
 from certbot_apache._internal import interfaces
@@ -14,14 +15,14 @@ class ApacheParserNode(interfaces.ParserNode):
 
     def __init__(self, **kwargs):
         ancestor, dirty, filepath, metadata = util.parsernode_kwargs(kwargs)  # pylint: disable=unused-variable
-        super(ApacheParserNode, self).__init__(**kwargs)
+        super().__init__(**kwargs)
         self.ancestor = ancestor
         self.filepath = filepath
         self.dirty = dirty
         self.metadata = metadata
         self._raw = self.metadata["ac_ast"]
 
-    def save(self, msg): # pragma: no cover
+    def save(self, msg):  # pragma: no cover
         pass
 
     def find_ancestors(self, name):  # pylint: disable=unused-variable
@@ -38,7 +39,7 @@ class ApacheCommentNode(ApacheParserNode):
 
     def __init__(self, **kwargs):
         comment, kwargs = util.commentnode_kwargs(kwargs)  # pylint: disable=unused-variable
-        super(ApacheCommentNode, self).__init__(**kwargs)
+        super().__init__(**kwargs)
         self.comment = comment
 
     def __eq__(self, other):  # pragma: no cover
@@ -56,7 +57,7 @@ class ApacheDirectiveNode(ApacheParserNode):
 
     def __init__(self, **kwargs):
         name, parameters, enabled, kwargs = util.directivenode_kwargs(kwargs)
-        super(ApacheDirectiveNode, self).__init__(**kwargs)
+        super().__init__(**kwargs)
         self.name = name
         self.parameters = parameters
         self.enabled = enabled
@@ -82,8 +83,8 @@ class ApacheBlockNode(ApacheDirectiveNode):
     """ apacheconfig implementation of BlockNode interface """
 
     def __init__(self, **kwargs):
-        super(ApacheBlockNode, self).__init__(**kwargs)
-        self.children = ()
+        super().__init__(**kwargs)
+        self.children: Tuple[ApacheParserNode, ...] = ()
 
     def __eq__(self, other):  # pragma: no cover
         if isinstance(other, self.__class__):

certbot-apache/certbot_apache/_internal/assertions.py

@@ -3,7 +3,6 @@ import fnmatch
 
 from certbot_apache._internal import interfaces
 
-
 PASS = "CERTBOT_PASS_ASSERT"
 
 
@@ -137,6 +136,6 @@ def assertEqualPathsList(first, second):  # pragma: no cover
     if any(isPass(path) for path in second):
         return
     for fpath in first:
-        assert any([fnmatch.fnmatch(fpath, spath) for spath in second])
+        assert any(fnmatch.fnmatch(fpath, spath) for spath in second)
     for spath in second:
-        assert any([fnmatch.fnmatch(fpath, spath) for fpath in first])
+        assert any(fnmatch.fnmatch(fpath, spath) for fpath in first)

certbot-apache/certbot_apache/_internal/augeas_lens/httpd.aug

@@ -6,7 +6,7 @@ Authors:
   Raphael Pinson <raphink@gmail.com>
 
 About: Reference
-  Online Apache configuration manual: http://httpd.apache.org/docs/trunk/
+  Online Apache configuration manual: https://httpd.apache.org/docs/trunk/
 
 About: License
     This file is licensed under the LGPL v2+.

certbot-apache/certbot_apache/_internal/augeasparser.py

@@ -64,10 +64,10 @@ Translates over to:
     "/files/etc/apache2/apache2.conf/bLoCk[1]",
 ]
 """
-from acme.magic_typing import Set
+from typing import Set
+
 from certbot import errors
 from certbot.compat import os
-
 from certbot_apache._internal import apache_util
 from certbot_apache._internal import assertions
 from certbot_apache._internal import interfaces
@@ -80,7 +80,7 @@ class AugeasParserNode(interfaces.ParserNode):
 
     def __init__(self, **kwargs):
         ancestor, dirty, filepath, metadata = util.parsernode_kwargs(kwargs)  # pylint: disable=unused-variable
-        super(AugeasParserNode, self).__init__(**kwargs)
+        super().__init__(**kwargs)
         self.ancestor = ancestor
         self.filepath = filepath
         self.dirty = dirty
@@ -169,7 +169,7 @@ class AugeasCommentNode(AugeasParserNode):
 
     def __init__(self, **kwargs):
         comment, kwargs = util.commentnode_kwargs(kwargs)  # pylint: disable=unused-variable
-        super(AugeasCommentNode, self).__init__(**kwargs)
+        super().__init__(**kwargs)
         # self.comment = comment
         self.comment = comment
 
@@ -188,7 +188,7 @@ class AugeasDirectiveNode(AugeasParserNode):
 
     def __init__(self, **kwargs):
         name, parameters, enabled, kwargs = util.directivenode_kwargs(kwargs)
-        super(AugeasDirectiveNode, self).__init__(**kwargs)
+        super().__init__(**kwargs)
         self.name = name
         self.enabled = enabled
         if parameters:
@@ -245,7 +245,7 @@ class AugeasBlockNode(AugeasDirectiveNode):
     """ Augeas implementation of BlockNode interface """
 
     def __init__(self, **kwargs):
-        super(AugeasBlockNode, self).__init__(**kwargs)
+        super().__init__(**kwargs)
         self.children = ()
 
     def __eq__(self, other):
@@ -355,7 +355,7 @@ class AugeasBlockNode(AugeasDirectiveNode):
         ownpath = self.metadata.get("augeaspath")
 
         directives = self.parser.find_dir(name, start=ownpath, exclude=exclude)
-        already_parsed = set()  # type: Set[str]
+        already_parsed: Set[str] = set()
         for directive in directives:
             # Remove the /arg part from the Augeas path
             directive = directive.partition("/arg")[0]

certbot-apache/certbot_apache/_internal/configurator.py

@@ -1,35 +1,28 @@
 """Apache Configurator."""
 # pylint: disable=too-many-lines
 from collections import defaultdict
-from distutils.version import LooseVersion
 import copy
+from distutils.version import LooseVersion
 import fnmatch
 import logging
 import re
 import socket
 import time
-
-import six
-import zope.component
-import zope.interface
-try:
-    import apacheconfig
-    HAS_APACHECONFIG = True
-except ImportError:  # pragma: no cover
-    HAS_APACHECONFIG = False
+from typing import DefaultDict
+from typing import Dict
+from typing import List
+from typing import Optional
+from typing import Set
+from typing import Union
 
 from acme import challenges
-from acme.magic_typing import DefaultDict
-from acme.magic_typing import Dict
-from acme.magic_typing import List
-from acme.magic_typing import Set
-from acme.magic_typing import Union
 from certbot import errors
 from certbot import interfaces
 from certbot import util
 from certbot.achallenges import KeyAuthorizationAnnotatedChallenge  # pylint: disable=unused-import
 from certbot.compat import filesystem
 from certbot.compat import os
+from certbot.display import util as display_util
 from certbot.plugins import common
 from certbot.plugins.enhancements import AutoHSTSEnhancement
 from certbot.plugins.util import path_surgery
@@ -41,10 +34,61 @@ from certbot_apache._internal import dualparser
 from certbot_apache._internal import http_01
 from certbot_apache._internal import obj
 from certbot_apache._internal import parser
+from certbot_apache._internal.dualparser import DualBlockNode
+from certbot_apache._internal.obj import VirtualHost
+from certbot_apache._internal.parser import ApacheParser
+
+try:
+    import apacheconfig
+    HAS_APACHECONFIG = True
+except ImportError:  # pragma: no cover
+    HAS_APACHECONFIG = False
+
 
 logger = logging.getLogger(__name__)
 
 
+class OsOptions:
+    """
+    Dedicated class to describe the OS specificities (eg. paths, binary names)
+    that the Apache configurator needs to be aware to operate properly.
+    """
+    def __init__(self,
+                 server_root="/etc/apache2",
+                 vhost_root="/etc/apache2/sites-available",
+                 vhost_files="*",
+                 logs_root="/var/log/apache2",
+                 ctl="apache2ctl",
+                 version_cmd: Optional[List[str]] = None,
+                 restart_cmd: Optional[List[str]] = None,
+                 restart_cmd_alt: Optional[List[str]] = None,
+                 conftest_cmd: Optional[List[str]] = None,
+                 enmod: Optional[str] = None,
+                 dismod: Optional[str] = None,
+                 le_vhost_ext="-le-ssl.conf",
+                 handle_modules=False,
+                 handle_sites=False,
+                 challenge_location="/etc/apache2",
+                 apache_bin: Optional[str] = None,
+                 ):
+        self.server_root = server_root
+        self.vhost_root = vhost_root
+        self.vhost_files = vhost_files
+        self.logs_root = logs_root
+        self.ctl = ctl
+        self.version_cmd = ['apache2ctl', '-v'] if not version_cmd else version_cmd
+        self.restart_cmd = ['apache2ctl', 'graceful'] if not restart_cmd else restart_cmd
+        self.restart_cmd_alt = restart_cmd_alt
+        self.conftest_cmd = ['apache2ctl', 'configtest'] if not conftest_cmd else conftest_cmd
+        self.enmod = enmod
+        self.dismod = dismod
+        self.le_vhost_ext = le_vhost_ext
+        self.handle_modules = handle_modules
+        self.handle_sites = handle_sites
+        self.challenge_location = challenge_location
+        self.bin = apache_bin
+
+
 # TODO: Augeas sections ie. <VirtualHost>, <IfModule> beginning and closing
 # tags need to be the same case, otherwise Augeas doesn't recognize them.
 # This is not able to be completely remedied by regular expressions because
@@ -73,14 +117,11 @@ logger = logging.getLogger(__name__)
 # TODO: Add directives to sites-enabled... not sites-available.
 #     sites-available doesn't allow immediate find_dir search even with save()
 #     and load()
-
-@zope.interface.implementer(interfaces.IAuthenticator, interfaces.IInstaller)
-@zope.interface.provider(interfaces.IPluginFactory)
-class ApacheConfigurator(common.Installer):
+class ApacheConfigurator(common.Installer, interfaces.Authenticator):
     """Apache configurator.
 
     :ivar config: Configuration.
-    :type config: :class:`~certbot.interfaces.IConfig`
+    :type config: certbot.configuration.NamespaceConfig
 
     :ivar parser: Handles low level parsing
     :type parser: :class:`~certbot_apache._internal.parser`
@@ -100,26 +141,7 @@ class ApacheConfigurator(common.Installer):
             " change depending on the operating system Certbot is run on.)"
         )
 
-    OS_DEFAULTS = dict(
-        server_root="/etc/apache2",
-        vhost_root="/etc/apache2/sites-available",
-        vhost_files="*",
-        logs_root="/var/log/apache2",
-        ctl="apache2ctl",
-        version_cmd=['apache2ctl', '-v'],
-        restart_cmd=['apache2ctl', 'graceful'],
-        conftest_cmd=['apache2ctl', 'configtest'],
-        enmod=None,
-        dismod=None,
-        le_vhost_ext="-le-ssl.conf",
-        handle_modules=False,
-        handle_sites=False,
-        challenge_location="/etc/apache2",
-    )
-
-    def option(self, key):
-        """Get a value from options"""
-        return self.options.get(key)
+    OS_DEFAULTS = OsOptions()
 
     def pick_apache_config(self, warn_on_no_mod_ssl=True):
         """
@@ -145,18 +167,18 @@ class ApacheConfigurator(common.Installer):
         """
         opts = ["enmod", "dismod", "le_vhost_ext", "server_root", "vhost_root",
                 "logs_root", "challenge_location", "handle_modules", "handle_sites",
-                "ctl"]
+                "ctl", "bin"]
         for o in opts:
             # Config options use dashes instead of underscores
             if self.conf(o.replace("_", "-")) is not None:
-                self.options[o] = self.conf(o.replace("_", "-"))
+                setattr(self.options, o, self.conf(o.replace("_", "-")))
             else:
-                self.options[o] = self.OS_DEFAULTS[o]
+                setattr(self.options, o, getattr(self.OS_DEFAULTS, o))
 
         # Special cases
-        self.options["version_cmd"][0] = self.option("ctl")
-        self.options["restart_cmd"][0] = self.option("ctl")
-        self.options["conftest_cmd"][0] = self.option("ctl")
+        self.options.version_cmd[0] = self.options.ctl
+        self.options.restart_cmd[0] = self.options.ctl
+        self.options.conftest_cmd[0] = self.options.ctl
 
     @classmethod
     def add_parser_arguments(cls, add):
@@ -171,29 +193,31 @@ class ApacheConfigurator(common.Installer):
         else:
             # cls.OS_DEFAULTS can be distribution specific, see override classes
             DEFAULTS = cls.OS_DEFAULTS
-        add("enmod", default=DEFAULTS["enmod"],
+        add("enmod", default=DEFAULTS.enmod,
             help="Path to the Apache 'a2enmod' binary")
-        add("dismod", default=DEFAULTS["dismod"],
+        add("dismod", default=DEFAULTS.dismod,
             help="Path to the Apache 'a2dismod' binary")
-        add("le-vhost-ext", default=DEFAULTS["le_vhost_ext"],
+        add("le-vhost-ext", default=DEFAULTS.le_vhost_ext,
             help="SSL vhost configuration extension")
-        add("server-root", default=DEFAULTS["server_root"],
+        add("server-root", default=DEFAULTS.server_root,
             help="Apache server root directory")
         add("vhost-root", default=None,
             help="Apache server VirtualHost configuration root")
-        add("logs-root", default=DEFAULTS["logs_root"],
+        add("logs-root", default=DEFAULTS.logs_root,
             help="Apache server logs directory")
         add("challenge-location",
-            default=DEFAULTS["challenge_location"],
+            default=DEFAULTS.challenge_location,
             help="Directory path for challenge configuration")
-        add("handle-modules", default=DEFAULTS["handle_modules"],
+        add("handle-modules", default=DEFAULTS.handle_modules,
             help="Let installer handle enabling required modules for you " +
                  "(Only Ubuntu/Debian currently)")
-        add("handle-sites", default=DEFAULTS["handle_sites"],
+        add("handle-sites", default=DEFAULTS.handle_sites,
             help="Let installer handle enabling sites for you " +
                  "(Only Ubuntu/Debian currently)")
-        add("ctl", default=DEFAULTS["ctl"],
+        add("ctl", default=DEFAULTS.ctl,
             help="Full path to Apache control script")
+        add("bin", default=DEFAULTS.bin,
+            help="Full path to apache2/httpd binary")
 
     def __init__(self, *args, **kwargs):
         """Initialize an Apache Configurator.
@@ -205,33 +229,33 @@ class ApacheConfigurator(common.Installer):
         version = kwargs.pop("version", None)
         use_parsernode = kwargs.pop("use_parsernode", False)
         openssl_version = kwargs.pop("openssl_version", None)
-        super(ApacheConfigurator, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
         # Add name_server association dict
-        self.assoc = {}  # type: Dict[str, obj.VirtualHost]
+        self.assoc: Dict[str, obj.VirtualHost] = {}
         # Outstanding challenges
-        self._chall_out = set()  # type: Set[KeyAuthorizationAnnotatedChallenge]
+        self._chall_out: Set[KeyAuthorizationAnnotatedChallenge] = set()
         # List of vhosts configured per wildcard domain on this run.
         # used by deploy_cert() and enhance()
-        self._wildcard_vhosts = {}  # type: Dict[str, List[obj.VirtualHost]]
+        self._wildcard_vhosts: Dict[str, List[obj.VirtualHost]] = {}
         # Maps enhancements to vhosts we've enabled the enhancement for
-        self._enhanced_vhosts = defaultdict(set)  # type: DefaultDict[str, Set[obj.VirtualHost]]
+        self._enhanced_vhosts: DefaultDict[str, Set[obj.VirtualHost]] = defaultdict(set)
         # Temporary state for AutoHSTS enhancement
-        self._autohsts = {}  # type: Dict[str, Dict[str, Union[int, float]]]
+        self._autohsts: Dict[str, Dict[str, Union[int, float]]] = {}
         # Reverter save notes
         self.save_notes = ""
         # Should we use ParserNode implementation instead of the old behavior
         self.USE_PARSERNODE = use_parsernode
         # Saves the list of file paths that were parsed initially, and
         # not added to parser tree by self.conf("vhost-root") for example.
-        self.parsed_paths = []  # type: List[str]
+        self.parsed_paths: List[str] = []
         # These will be set in the prepare function
         self._prepared = False
-        self.parser = None
-        self.parser_root = None
+        self.parser: ApacheParser
+        self.parser_root: Optional[DualBlockNode] = None
         self.version = version
         self._openssl_version = openssl_version
-        self.vhosts = None
+        self.vhosts: List[VirtualHost]
         self.options = copy.deepcopy(self.OS_DEFAULTS)
         self._enhance_func = {"redirect": self._enable_redirect,
                               "ensure-http-header": self._set_http_header,
@@ -269,18 +293,25 @@ class ApacheConfigurator(common.Installer):
         """
         if self._openssl_version:
             return self._openssl_version
-        # Step 1. Check for LoadModule directive
+        # Step 1. Determine the location of ssl_module
         try:
             ssl_module_location = self.parser.modules['ssl_module']
         except KeyError:
             if warn_on_no_mod_ssl:
                 logger.warning("Could not find ssl_module; not disabling session tickets.")
             return None
-        if not ssl_module_location:
-            logger.warning("Could not find ssl_module; not disabling session tickets.")
-            return None
-        ssl_module_location = self.parser.standard_path_from_server_root(ssl_module_location)
-        # Step 2. Grep in the .so for openssl version
+        if ssl_module_location:
+            # Possibility A: ssl_module is a DSO
+            ssl_module_location = self.parser.standard_path_from_server_root(ssl_module_location)
+        else:
+            # Possibility B: ssl_module is statically linked into Apache
+            if self.options.bin:
+                ssl_module_location = self.options.bin
+            else:
+                logger.warning("ssl_module is statically linked but --apache-bin is "
+                               "missing; not disabling session tickets.")
+                return None
+        # Step 2. Grep in the binary for openssl version
         contents = self._open_module_file(ssl_module_location)
         if not contents:
             logger.warning("Unable to read ssl_module file; not disabling session tickets.")
@@ -305,7 +336,7 @@ class ApacheConfigurator(common.Installer):
         self._prepare_options()
 
         # Verify Apache is installed
-        self._verify_exe_availability(self.option("ctl"))
+        self._verify_exe_availability(self.options.ctl)
 
         # Make sure configuration is valid
         self.config_test()
@@ -318,6 +349,9 @@ class ApacheConfigurator(common.Installer):
         if self.version < (2, 2):
             raise errors.NotSupportedError(
                 "Apache Version {0} not supported.".format(str(self.version)))
+        elif self.version < (2, 4):
+            logger.warning('Support for Apache 2.2 is deprecated and will be removed in a '
+                           'future release.')
 
         # Recover from previous crash before Augeas initialization to have the
         # correct parse tree from the get go.
@@ -330,8 +364,9 @@ class ApacheConfigurator(common.Installer):
                    "augeaspath": self.parser.get_root_augpath(),
                    "ac_ast": None}
         if self.USE_PARSERNODE:
-            self.parser_root = self.get_parsernode_root(pn_meta)
-            self.parsed_paths = self.parser_root.parsed_paths()
+            parser_root = self.get_parsernode_root(pn_meta)
+            self.parser_root = parser_root
+            self.parsed_paths = parser_root.parsed_paths()
 
         # Check for errors in parsing files with Augeas
         self.parser.check_parsing_errors("httpd.aug")
@@ -341,20 +376,20 @@ class ApacheConfigurator(common.Installer):
 
         # We may try to enable mod_ssl later. If so, we shouldn't warn if we can't find it now.
         # This is currently only true for debian/ubuntu.
-        warn_on_no_mod_ssl = not self.option("handle_modules")
+        warn_on_no_mod_ssl = not self.options.handle_modules
         self.install_ssl_options_conf(self.mod_ssl_conf,
                                       self.updated_mod_ssl_conf_digest,
                                       warn_on_no_mod_ssl)
 
         # Prevent two Apache plugins from modifying a config at once
         try:
-            util.lock_dir_until_exit(self.option("server_root"))
+            util.lock_dir_until_exit(self.options.server_root)
         except (OSError, errors.LockError):
             logger.debug("Encountered error:", exc_info=True)
             raise errors.PluginError(
                 "Unable to create a lock file in {0}. Are you running"
                 " Certbot with sufficient privileges to modify your"
-                " Apache configuration?".format(self.option("server_root")))
+                " Apache configuration?".format(self.options.server_root))
         self._prepared = True
 
     def save(self, title=None, temporary=False):
@@ -390,10 +425,10 @@ class ApacheConfigurator(common.Installer):
         :raises .errors.PluginError: If unable to recover the configuration
 
         """
-        super(ApacheConfigurator, self).recovery_routine()
+        super().recovery_routine()
         # Reload configuration after these changes take effect if needed
         # ie. ApacheParser has been initialized.
-        if self.parser:
+        if hasattr(self, "parser"):
             # TODO: wrap into non-implementation specific  parser interface
             self.parser.aug.load()
 
@@ -415,7 +450,7 @@ class ApacheConfigurator(common.Installer):
             the function is unable to correctly revert the configuration
 
         """
-        super(ApacheConfigurator, self).rollback_checkpoints(rollback)
+        super().rollback_checkpoints(rollback)
         self.parser.aug.load()
 
     def _verify_exe_availability(self, exe):
@@ -429,7 +464,7 @@ class ApacheConfigurator(common.Installer):
         """Initializes the ApacheParser"""
         # If user provided vhost_root value in command line, use it
         return parser.ApacheParser(
-            self.option("server_root"), self.conf("vhost-root"),
+            self.options.server_root, self.conf("vhost-root"),
             self.version, configurator=self)
 
     def get_parsernode_root(self, metadata):
@@ -437,9 +472,9 @@ class ApacheConfigurator(common.Installer):
 
         if HAS_APACHECONFIG:
             apache_vars = {}
-            apache_vars["defines"] = apache_util.parse_defines(self.option("ctl"))
-            apache_vars["includes"] = apache_util.parse_includes(self.option("ctl"))
-            apache_vars["modules"] = apache_util.parse_modules(self.option("ctl"))
+            apache_vars["defines"] = apache_util.parse_defines(self.options.ctl)
+            apache_vars["includes"] = apache_util.parse_includes(self.options.ctl)
+            apache_vars["modules"] = apache_util.parse_modules(self.options.ctl)
             metadata["apache_vars"] = apache_vars
 
             with open(self.parser.loc["root"]) as f:
@@ -454,21 +489,6 @@ class ApacheConfigurator(common.Installer):
             metadata=metadata
         )
 
-    def _wildcard_domain(self, domain):
-        """
-        Checks if domain is a wildcard domain
-
-        :param str domain: Domain to check
-
-        :returns: If the domain is wildcard domain
-        :rtype: bool
-        """
-        if isinstance(domain, six.text_type):
-            wildcard_marker = u"*."
-        else:
-            wildcard_marker = b"*."
-        return domain.startswith(wildcard_marker)
-
     def deploy_cert(self, domain, cert_path, key_path,
                     chain_path=None, fullchain_path=None):
         """Deploys certificate to specified virtual host.
@@ -490,6 +510,8 @@ class ApacheConfigurator(common.Installer):
         vhosts = self.choose_vhosts(domain)
         for vhost in vhosts:
             self._deploy_cert(vhost, cert_path, key_path, chain_path, fullchain_path)
+            display_util.notify("Successfully deployed certificate for {} to {}"
+                                .format(domain, vhost.filep))
 
     def choose_vhosts(self, domain, create_if_no_ssl=True):
         """
@@ -503,7 +525,7 @@ class ApacheConfigurator(common.Installer):
         :rtype: `list` of :class:`~certbot_apache._internal.obj.VirtualHost`
         """
 
-        if self._wildcard_domain(domain):
+        if util.is_wildcard_domain(domain):
             if domain in self._wildcard_vhosts:
                 # Vhosts for a wildcard domain were already selected
                 return self._wildcard_vhosts[domain]
@@ -528,6 +550,19 @@ class ApacheConfigurator(common.Installer):
 
         return list(matched)
 
+    def _raise_no_suitable_vhost_error(self, target_name: str):
+        """
+        Notifies the user that Certbot could not find a vhost to secure
+        and raises an error.
+        :param str target_name: The server name that could not be mapped
+        :raises errors.PluginError: Raised unconditionally
+        """
+        raise errors.PluginError(
+            "Certbot could not find a VirtualHost for {0} in the Apache "
+            "configuration. Please create a VirtualHost with a ServerName "
+            "matching {0} and try again.".format(target_name)
+        )
+
     def _in_wildcard_scope(self, name, domain):
         """
         Helper method for _vhosts_for_wildcard() that makes sure that the domain
@@ -565,12 +600,7 @@ class ApacheConfigurator(common.Installer):
         dialog_output = display_ops.select_vhost_multiple(list(dialog_input))
 
         if not dialog_output:
-            logger.error(
-                "No vhost exists with servername or alias for domain %s. "
-                "No vhost was selected. Please specify ServerName or ServerAlias "
-                "in the Apache config.",
-                domain)
-            raise errors.PluginError("No vhost selected")
+            self._raise_no_suitable_vhost_error(domain)
 
         # Make sure we create SSL vhosts for the ones that are HTTP only
         # if requested.
@@ -694,12 +724,7 @@ class ApacheConfigurator(common.Installer):
         # Select a vhost from a list
         vhost = display_ops.select_vhost(target_name, self.vhosts)
         if vhost is None:
-            logger.error(
-                "No vhost exists with servername or alias of %s. "
-                "No vhost was selected. Please specify ServerName or ServerAlias "
-                "in the Apache config.",
-                target_name)
-            raise errors.PluginError("No vhost selected")
+            self._raise_no_suitable_vhost_error(target_name)
         if temp:
             return vhost
         if not vhost.ssl:
@@ -835,7 +860,7 @@ class ApacheConfigurator(common.Installer):
         :rtype: set
 
         """
-        all_names = set()  # type: Set[str]
+        all_names: Set[str] = set()
 
         vhost_macro = []
 
@@ -853,7 +878,7 @@ class ApacheConfigurator(common.Installer):
                         all_names.add(name)
 
         if vhost_macro:
-            zope.component.getUtility(interfaces.IDisplay).notification(
+            display_util.notification(
                 "Apache mod_macro seems to be in use in file(s):\n{0}"
                 "\n\nUnfortunately mod_macro is not yet supported".format(
                     "\n  ".join(vhost_macro)), force_interactive=True)
@@ -999,8 +1024,8 @@ class ApacheConfigurator(common.Installer):
 
         """
         # Search base config, and all included paths for VirtualHosts
-        file_paths = {}  # type: Dict[str, str]
-        internal_paths = defaultdict(set)  # type: DefaultDict[str, Set[str]]
+        file_paths: Dict[str, str] = {}
+        internal_paths: DefaultDict[str, Set[str]] = defaultdict(set)
         vhs = []
         # Make a list of parser paths because the parser_paths
         # dictionary may be modified during the loop.
@@ -1051,6 +1076,9 @@ class ApacheConfigurator(common.Installer):
         :rtype: list
         """
 
+        if not self.parser_root:
+            raise errors.Error("This ApacheConfigurator instance is not"  # pragma: no cover
+                               " configured to use a node parser.")
         vhs = []
         vhosts = self.parser_root.find_blocks("VirtualHost", exclude=False)
         for vhblock in vhosts:
@@ -1303,7 +1331,7 @@ class ApacheConfigurator(common.Installer):
         :param boolean temp: If the change is temporary
         """
 
-        if self.option("handle_modules"):
+        if self.options.handle_modules:
             if self.version >= (2, 4) and ("socache_shmcb_module" not in
                                            self.parser.modules):
                 self.enable_mod("socache_shmcb", temp=temp)
@@ -1323,7 +1351,7 @@ class ApacheConfigurator(common.Installer):
 
         Duplicates vhost and adds default ssl options
         New vhost will reside as (nonssl_vhost.path) +
-        ``self.option("le_vhost_ext")``
+        ``self.options.le_vhost_ext``
 
         .. note:: This function saves the configuration
 
@@ -1422,15 +1450,15 @@ class ApacheConfigurator(common.Installer):
         """
 
         if self.conf("vhost-root") and os.path.exists(self.conf("vhost-root")):
-            fp = os.path.join(filesystem.realpath(self.option("vhost_root")),
+            fp = os.path.join(filesystem.realpath(self.options.vhost_root),
                               os.path.basename(non_ssl_vh_fp))
         else:
             # Use non-ssl filepath
             fp = filesystem.realpath(non_ssl_vh_fp)
 
         if fp.endswith(".conf"):
-            return fp[:-(len(".conf"))] + self.option("le_vhost_ext")
-        return fp + self.option("le_vhost_ext")
+            return fp[:-(len(".conf"))] + self.options.le_vhost_ext
+        return fp + self.options.le_vhost_ext
 
     def _sift_rewrite_rule(self, line):
         """Decides whether a line should be copied to a SSL vhost.
@@ -1452,7 +1480,7 @@ class ApacheConfigurator(common.Installer):
         if not line.lower().lstrip().startswith("rewriterule"):
             return False
 
-        # According to: http://httpd.apache.org/docs/2.4/rewrite/flags.html
+        # According to: https://httpd.apache.org/docs/2.4/rewrite/flags.html
         # The syntax of a RewriteRule is:
         # RewriteRule pattern target [Flag1,Flag2,Flag3]
         # i.e. target is required, so it must exist.
@@ -1504,12 +1532,11 @@ class ApacheConfigurator(common.Installer):
             raise errors.PluginError("Unable to write/read in make_vhost_ssl")
 
         if sift:
-            reporter = zope.component.getUtility(interfaces.IReporter)
-            reporter.add_message(
-                "Some rewrite rules copied from {0} were disabled in the "
-                "vhost for your HTTPS site located at {1} because they have "
-                "the potential to create redirection loops.".format(
-                    vhost.filep, ssl_fp), reporter.MEDIUM_PRIORITY)
+            display_util.notify(
+                f"Some rewrite rules copied from {vhost.filep} were disabled in the "
+                f"vhost for your HTTPS site located at {ssl_fp} because they have "
+                "the potential to create redirection loops."
+            )
         self.parser.aug.set("/augeas/files%s/mtime" % (self._escape(ssl_fp)), "0")
         self.parser.aug.set("/augeas/files%s/mtime" % (self._escape(vhost.filep)), "0")
 
@@ -1838,13 +1865,13 @@ class ApacheConfigurator(common.Installer):
             if options:
                 msg_enhancement += ": " + options
             msg = msg_tmpl.format(domain, msg_enhancement)
-            logger.warning(msg)
+            logger.error(msg)
             raise errors.PluginError(msg)
         try:
             for vhost in vhosts:
                 func(vhost, options)
         except errors.PluginError:
-            logger.warning("Failed %s for %s", enhancement, domain)
+            logger.error("Failed %s for %s", enhancement, domain)
             raise
 
     def _autohsts_increase(self, vhost, id_str, nextstep):
@@ -2159,7 +2186,7 @@ class ApacheConfigurator(common.Installer):
         # There can be other RewriteRule directive lines in vhost config.
         # rewrite_args_dict keys are directive ids and the corresponding value
         # for each is a list of arguments to that directive.
-        rewrite_args_dict = defaultdict(list)  # type: DefaultDict[str, List[str]]
+        rewrite_args_dict: DefaultDict[str, List[str]] = defaultdict(list)
         pat = r'(.*directive\[\d+\]).*'
         for match in rewrite_path:
             m = re.match(pat, match)
@@ -2253,7 +2280,7 @@ class ApacheConfigurator(common.Installer):
         if ssl_vhost.aliases:
             serveralias = "ServerAlias " + " ".join(ssl_vhost.aliases)
 
-        rewrite_rule_args = []  # type: List[str]
+        rewrite_rule_args: List[str] = []
         if self.get_version() >= (2, 3, 9):
             rewrite_rule_args = constants.REWRITE_HTTPS_ARGS_WITH_END
         else:
@@ -2274,7 +2301,7 @@ class ApacheConfigurator(common.Installer):
                             addr in self._get_proposed_addrs(ssl_vhost)),
                    servername, serveralias,
                    " ".join(rewrite_rule_args),
-                   self.option("logs_root")))
+                   self.options.logs_root))
 
     def _write_out_redirect(self, ssl_vhost, text):
         # This is the default name
@@ -2286,7 +2313,7 @@ class ApacheConfigurator(common.Installer):
             if len(ssl_vhost.name) < (255 - (len(redirect_filename) + 1)):
                 redirect_filename = "le-redirect-%s.conf" % ssl_vhost.name
 
-        redirect_filepath = os.path.join(self.option("vhost_root"),
+        redirect_filepath = os.path.join(self.options.vhost_root,
                                          redirect_filename)
 
         # Register the new file that will be created
@@ -2368,7 +2395,7 @@ class ApacheConfigurator(common.Installer):
             vhost.enabled = True
         return
 
-    def enable_mod(self, mod_name, temp=False):
+    def enable_mod(self, mod_name, temp=False):  # pylint: disable=unused-argument
         """Enables module in Apache.
 
         Both enables and reloads Apache so module is active.
@@ -2406,19 +2433,18 @@ class ApacheConfigurator(common.Installer):
 
         """
         try:
-            util.run_script(self.option("restart_cmd"))
+            util.run_script(self.options.restart_cmd)
         except errors.SubprocessError as err:
-            logger.info("Unable to restart apache using %s",
-                        self.option("restart_cmd"))
-            alt_restart = self.option("restart_cmd_alt")
+            logger.warning("Unable to restart apache using %s",
+                        self.options.restart_cmd)
+            alt_restart = self.options.restart_cmd_alt
             if alt_restart:
                 logger.debug("Trying alternative restart command: %s",
                              alt_restart)
                 # There is an alternative restart command available
                 # This usually is "restart" verb while original is "graceful"
                 try:
-                    util.run_script(self.option(
-                        "restart_cmd_alt"))
+                    util.run_script(self.options.restart_cmd_alt)
                     return
                 except errors.SubprocessError as secerr:
                     error = str(secerr)
@@ -2433,7 +2459,7 @@ class ApacheConfigurator(common.Installer):
 
         """
         try:
-            util.run_script(self.option("conftest_cmd"))
+            util.run_script(self.options.conftest_cmd)
         except errors.SubprocessError as err:
             raise errors.MisconfigurationError(str(err))
 
@@ -2449,11 +2475,11 @@ class ApacheConfigurator(common.Installer):
 
         """
         try:
-            stdout, _ = util.run_script(self.option("version_cmd"))
+            stdout, _ = util.run_script(self.options.version_cmd)
         except errors.SubprocessError:
             raise errors.PluginError(
                 "Unable to run %s -v" %
-                self.option("version_cmd"))
+                self.options.version_cmd)
 
         regex = re.compile(r"Apache/([0-9\.]*)", re.IGNORECASE)
         matches = regex.findall(stdout)
@@ -2473,6 +2499,11 @@ class ApacheConfigurator(common.Installer):
                 version=".".join(str(i) for i in self.version))
         )
 
+    def auth_hint(self, failed_achalls): # pragma: no cover
+        return ("The Certificate Authority failed to verify the temporary Apache configuration "
+                "changes made by Certbot. Ensure that the listed domains point to this Apache "
+                "server and that it is accessible from the internet.")
+
     ###########################################################################
     # Challenges Section
     ###########################################################################
@@ -2566,7 +2597,7 @@ class ApacheConfigurator(common.Installer):
                 msg_tmpl = ("Certbot was not able to find SSL VirtualHost for a "
                             "domain {0} for enabling AutoHSTS enhancement.")
                 msg = msg_tmpl.format(d)
-                logger.warning(msg)
+                logger.error(msg)
                 raise errors.PluginError(msg)
             for vh in vhosts:
                 try:
@@ -2652,7 +2683,7 @@ class ApacheConfigurator(common.Installer):
                 except errors.PluginError:
                     msg = ("Could not find VirtualHost with ID {0}, disabling "
                            "AutoHSTS for this VirtualHost").format(id_str)
-                    logger.warning(msg)
+                    logger.error(msg)
                     # Remove the orphaned AutoHSTS entry from pluginstorage
                     self._autohsts.pop(id_str)
                     continue
@@ -2692,7 +2723,7 @@ class ApacheConfigurator(common.Installer):
                 except errors.PluginError:
                     msg = ("VirtualHost with id {} was not found, unable to "
                            "make HSTS max-age permanent.").format(id_str)
-                    logger.warning(msg)
+                    logger.error(msg)
                     self._autohsts.pop(id_str)
                     continue
                 if self._autohsts_vhost_in_lineage(vhost, lineage):

certbot-apache/certbot_apache/_internal/constants.py

@@ -4,11 +4,13 @@ import pkg_resources
 from certbot.compat import os
 
 MOD_SSL_CONF_DEST = "options-ssl-apache.conf"
-"""Name of the mod_ssl config file as saved in `IConfig.config_dir`."""
+"""Name of the mod_ssl config file as saved
+in `certbot.configuration.NamespaceConfig.config_dir`."""
 
 
 UPDATED_MOD_SSL_CONF_DIGEST = ".updated-options-ssl-apache-conf-digest.txt"
-"""Name of the hash of the updated or informed mod_ssl_conf as saved in `IConfig.config_dir`."""
+"""Name of the hash of the updated or informed mod_ssl_conf as saved
+in `certbot.configuration.NamespaceConfig.config_dir`."""
 
 # NEVER REMOVE A SINGLE HASH FROM THIS LIST UNLESS YOU KNOW EXACTLY WHAT YOU ARE DOING!
 ALL_SSL_OPTIONS_HASHES = [

certbot-apache/certbot_apache/_internal/display_ops.py

@@ -1,12 +1,9 @@
 """Contains UI methods for Apache operations."""
 import logging
 
-import zope.component
-
 from certbot import errors
-from certbot import interfaces
 from certbot.compat import os
-import certbot.display.util as display_util
+from certbot.display import util as display_util
 
 logger = logging.getLogger(__name__)
 
@@ -26,7 +23,7 @@ def select_vhost_multiple(vhosts):
     # Remove the extra newline from the last entry
     if tags_list:
         tags_list[-1] = tags_list[-1][:-1]
-    code, names = zope.component.getUtility(interfaces.IDisplay).checklist(
+    code, names = display_util.checklist(
         "Which VirtualHosts would you like to install the wildcard certificate for?",
         tags=tags_list, force_interactive=True)
     if code == display_util.OK:
@@ -34,6 +31,7 @@ def select_vhost_multiple(vhosts):
         return return_vhosts
     return []
 
+
 def _reversemap_vhosts(names, vhosts):
     """Helper function for select_vhost_multiple for mapping string
     representations back to actual vhost objects"""
@@ -45,6 +43,7 @@ def _reversemap_vhosts(names, vhosts):
                 return_vhosts.append(vhost)
     return return_vhosts
 
+
 def select_vhost(domain, vhosts):
     """Select an appropriate Apache Vhost.
 
@@ -62,6 +61,7 @@ def select_vhost(domain, vhosts):
         return vhosts[tag]
     return None
 
+
 def _vhost_menu(domain, vhosts):
     """Select an appropriate Apache Vhost.
 
@@ -107,7 +107,7 @@ def _vhost_menu(domain, vhosts):
         )
 
     try:
-        code, tag = zope.component.getUtility(interfaces.IDisplay).menu(
+        code, tag = display_util.menu(
             "We were unable to find a vhost with a ServerName "
             "or Address of {0}.{1}Which virtual host would you "
             "like to choose?".format(domain, os.linesep),
@@ -119,7 +119,7 @@ def _vhost_menu(domain, vhosts):
             "guidance in non-interactive mode. Certbot may need "
             "vhosts to be explicitly labelled with ServerName or "
             "ServerAlias directives.".format(domain))
-        logger.warning(msg)
+        logger.error(msg)
         raise errors.MissingCommandlineFlag(msg)
 
     return code, tag

certbot-apache/certbot_apache/_internal/dualparser.py

@@ -1,10 +1,10 @@
 """ Dual ParserNode implementation """
+from certbot_apache._internal import apacheparser
 from certbot_apache._internal import assertions
 from certbot_apache._internal import augeasparser
-from certbot_apache._internal import apacheparser
 
 
-class DualNodeBase(object):
+class DualNodeBase:
     """ Dual parser interface for in development testing. This is used as the
     base class for dual parser interface classes. This class handles runtime
     attribute value assertions."""

certbot-apache/certbot_apache/_internal/entrypoint.py

@@ -10,6 +10,7 @@ from certbot_apache._internal import override_debian
 from certbot_apache._internal import override_fedora
 from certbot_apache._internal import override_gentoo
 from certbot_apache._internal import override_suse
+from certbot_apache._internal import override_void
 
 OVERRIDE_CLASSES = {
     "arch": override_arch.ArchConfigurator,
@@ -35,6 +36,7 @@ OVERRIDE_CLASSES = {
     "sles": override_suse.OpenSUSEConfigurator,
     "scientific": override_centos.CentOSConfigurator,
     "scientific linux": override_centos.CentOSConfigurator,
+    "void": override_void.VoidConfigurator,
 }
 
 

certbot-apache/certbot_apache/_internal/http_01.py

@@ -1,9 +1,9 @@
 """A class that performs HTTP-01 challenges for Apache"""
-import logging
 import errno
+import logging
+from typing import List
+from typing import Set
 
-from acme.magic_typing import List
-from acme.magic_typing import Set
 from certbot import errors
 from certbot.compat import filesystem
 from certbot.compat import os
@@ -47,7 +47,7 @@ class ApacheHttp01(common.ChallengePerformer):
     """
 
     def __init__(self, *args, **kwargs):
-        super(ApacheHttp01, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
         self.challenge_conf_pre = os.path.join(
             self.configurator.conf("challenge-location"),
             "le_http_01_challenge_pre.conf")
@@ -57,7 +57,7 @@ class ApacheHttp01(common.ChallengePerformer):
         self.challenge_dir = os.path.join(
             self.configurator.config.work_dir,
             "http_challenges")
-        self.moded_vhosts = set()  # type: Set[VirtualHost]
+        self.moded_vhosts: Set[VirtualHost] = set()
 
     def perform(self):
         """Perform all HTTP-01 challenges."""
@@ -93,12 +93,12 @@ class ApacheHttp01(common.ChallengePerformer):
                     self.configurator.enable_mod(mod, temp=True)
 
     def _mod_config(self):
-        selected_vhosts = []  # type: List[VirtualHost]
+        selected_vhosts: List[VirtualHost] = []
         http_port = str(self.configurator.config.http01_port)
+
+        # Search for VirtualHosts matching by name
         for chall in self.achalls:
-            # Search for matching VirtualHosts
-            for vh in self._matching_vhosts(chall.domain):
-                selected_vhosts.append(vh)
+            selected_vhosts += self._matching_vhosts(chall.domain)
 
         # Ensure that we have one or more VirtualHosts that we can continue
         # with. (one that listens to port configured with --http-01-port)
@@ -107,9 +107,13 @@ class ApacheHttp01(common.ChallengePerformer):
             if any(a.is_wildcard() or a.get_port() == http_port for a in vhost.addrs):
                 found = True
 
-        if not found:
-            for vh in self._relevant_vhosts():
-                selected_vhosts.append(vh)
+        # If there's at least one eligible VirtualHost, also add all unnamed VirtualHosts
+        # because they might match at runtime (#8890)
+        if found:
+            selected_vhosts += self._unnamed_vhosts()
+        # Otherwise, add every Virtualhost which listens on the right port
+        else:
+            selected_vhosts += self._relevant_vhosts()
 
         # Add the challenge configuration
         for vh in selected_vhosts:
@@ -167,9 +171,13 @@ class ApacheHttp01(common.ChallengePerformer):
 
         return relevant_vhosts
 
+    def _unnamed_vhosts(self) -> List[VirtualHost]:
+        """Return all VirtualHost objects with no ServerName"""
+        return [vh for vh in self.configurator.vhosts if vh.name is None]
+
     def _set_up_challenges(self):
         if not os.path.isdir(self.challenge_dir):
-            old_umask = os.umask(0o022)
+            old_umask = filesystem.umask(0o022)
             try:
                 filesystem.makedirs(self.challenge_dir, 0o755)
             except OSError as exception:
@@ -177,7 +185,7 @@ class ApacheHttp01(common.ChallengePerformer):
                     raise errors.PluginError(
                         "Couldn't create root for http-01 challenge")
             finally:
-                os.umask(old_umask)
+                filesystem.umask(old_umask)
 
         responses = []
         for achall in self.achalls:

certbot-apache/certbot_apache/_internal/interfaces.py

@@ -100,12 +100,9 @@ For this reason the internal representation of data should not ignore the case.
 """
 
 import abc
-import six
 
 
-
-@six.add_metaclass(abc.ABCMeta)
-class ParserNode(object):
+class ParserNode(object, metaclass=abc.ABCMeta):
     """
     ParserNode is the basic building block of the tree of such nodes,
     representing the structure of the configuration. It is largely meant to keep
@@ -204,9 +201,7 @@ class ParserNode(object):
         """
 
 
-# Linter rule exclusion done because of https://github.com/PyCQA/pylint/issues/179
-@six.add_metaclass(abc.ABCMeta)  # pylint: disable=abstract-method
-class CommentNode(ParserNode):
+class CommentNode(ParserNode, metaclass=abc.ABCMeta):
     """
     CommentNode class is used for representation of comments within the parsed
     configuration structure. Because of the nature of comments, it is not able
@@ -243,14 +238,13 @@ class CommentNode(ParserNode):
             created or changed after the last save. Default: False.
         :type dirty: bool
         """
-        super(CommentNode, self).__init__(ancestor=kwargs['ancestor'],
+        super().__init__(ancestor=kwargs['ancestor'],
                                           dirty=kwargs.get('dirty', False),
                                           filepath=kwargs['filepath'],
                                           metadata=kwargs.get('metadata', {}))  # pragma: no cover
 
 
-@six.add_metaclass(abc.ABCMeta)
-class DirectiveNode(ParserNode):
+class DirectiveNode(ParserNode, metaclass=abc.ABCMeta):
     """
     DirectiveNode class represents a configuration directive within the configuration.
     It can have zero or more parameters attached to it. Because of the nature of
@@ -308,7 +302,7 @@ class DirectiveNode(ParserNode):
         :type enabled: bool
 
         """
-        super(DirectiveNode, self).__init__(ancestor=kwargs['ancestor'],
+        super().__init__(ancestor=kwargs['ancestor'],
                                             dirty=kwargs.get('dirty', False),
                                             filepath=kwargs['filepath'],
                                             metadata=kwargs.get('metadata', {}))  # pragma: no cover
@@ -318,15 +312,14 @@ class DirectiveNode(ParserNode):
         """
         Sets the sequence of parameters for this ParserNode object without
         whitespaces. While the whitespaces for parameters are discarded when using
-        this method, the whitespacing preceeding the ParserNode itself should be
+        this method, the whitespacing preceding the ParserNode itself should be
         kept intact.
 
         :param list parameters: sequence of parameters
         """
 
 
-@six.add_metaclass(abc.ABCMeta)
-class BlockNode(DirectiveNode):
+class BlockNode(DirectiveNode, metaclass=abc.ABCMeta):
     """
     BlockNode class represents a block of nested configuration directives, comments
     and other blocks as its children. A BlockNode can have zero or more parameters
@@ -371,7 +364,7 @@ class BlockNode(DirectiveNode):
     def add_child_block(self, name, parameters=None, position=None):
         """
         Adds a new BlockNode child node with provided values and marks the callee
-        BlockNode dirty. This is used to add new children to the AST. The preceeding
+        BlockNode dirty. This is used to add new children to the AST. The preceding
         whitespaces should not be added based on the ancestor or siblings for the
         newly created object. This is to match the current behavior of the legacy
         parser implementation.
@@ -392,7 +385,7 @@ class BlockNode(DirectiveNode):
         """
         Adds a new DirectiveNode child node with provided values and marks the
         callee BlockNode dirty. This is used to add new children to the AST. The
-        preceeding whitespaces should not be added based on the ancestor or siblings
+        preceding whitespaces should not be added based on the ancestor or siblings
         for the newly created object. This is to match the current behavior of the
         legacy parser implementation.
 
@@ -413,7 +406,7 @@ class BlockNode(DirectiveNode):
         """
         Adds a new CommentNode child node with provided value and marks the
         callee BlockNode dirty. This is used to add new children to the AST. The
-        preceeding whitespaces should not be added based on the ancestor or siblings
+        preceding whitespaces should not be added based on the ancestor or siblings
         for the newly created object. This is to match the current behavior of the
         legacy parser implementation.
 

certbot-apache/certbot_apache/_internal/obj.py

@@ -1,7 +1,7 @@
 """Module contains classes used by the Apache Configurator."""
 import re
+from typing import Set
 
-from acme.magic_typing import Set
 from certbot.plugins import common
 
 
@@ -20,16 +20,13 @@ class Addr(common.Addr):
                      self.is_wildcard() and other.is_wildcard()))
         return False
 
-    def __ne__(self, other):
-        return not self.__eq__(other)
-
     def __repr__(self):
         return "certbot_apache._internal.obj.Addr(" + repr(self.tup) + ")"
 
     def __hash__(self):  # pylint: disable=useless-super-delegation
         # Python 3 requires explicit overridden for __hash__ if __eq__ or
         # __cmp__ is overridden. See https://bugs.python.org/issue2235
-        return super(Addr, self).__hash__()
+        return super().__hash__()
 
     def _addr_less_specific(self, addr):
         """Returns if addr.get_addr() is more specific than self.get_addr()."""
@@ -98,7 +95,7 @@ class Addr(common.Addr):
         return self.get_addr_obj(port)
 
 
-class VirtualHost(object):
+class VirtualHost:
     """Represents an Apache Virtualhost.
 
     :ivar str filep: file path of VH
@@ -140,7 +137,7 @@ class VirtualHost(object):
 
     def get_names(self):
         """Return a set of all names."""
-        all_names = set()  # type: Set[str]
+        all_names: Set[str] = set()
         all_names.update(self.aliases)
         # Strip out any scheme:// and <port> field from servername
         if self.name is not None:
@@ -191,9 +188,6 @@ class VirtualHost(object):
 
         return False
 
-    def __ne__(self, other):
-        return not self.__eq__(other)
-
     def __hash__(self):
         return hash((self.filep, self.path,
                      tuple(self.addrs), tuple(self.get_names()),
@@ -251,7 +245,7 @@ class VirtualHost(object):
 
         # already_found acts to keep everything very conservative.
         # Don't allow multiple ip:ports in same set.
-        already_found = set()  # type: Set[str]
+        already_found: Set[str] = set()
 
         for addr in vhost.addrs:
             for local_addr in self.addrs:

certbot-apache/certbot_apache/_internal/override_arch.py

@@ -1,15 +1,12 @@
 """ Distribution specific override class for Arch Linux """
-import zope.interface
-
-from certbot import interfaces
 from certbot_apache._internal import configurator
+from certbot_apache._internal.configurator import OsOptions
 
 
-@zope.interface.provider(interfaces.IPluginFactory)
 class ArchConfigurator(configurator.ApacheConfigurator):
     """Arch Linux specific ApacheConfigurator override class"""
 
-    OS_DEFAULTS = dict(
+    OS_DEFAULTS = OsOptions(
         server_root="/etc/httpd",
         vhost_root="/etc/httpd/conf",
         vhost_files="*.conf",
@@ -18,10 +15,5 @@ class ArchConfigurator(configurator.ApacheConfigurator):
         version_cmd=['apachectl', '-v'],
         restart_cmd=['apachectl', 'graceful'],
         conftest_cmd=['apachectl', 'configtest'],
-        enmod=None,
-        dismod=None,
-        le_vhost_ext="-le-ssl.conf",
-        handle_modules=False,
-        handle_sites=False,
         challenge_location="/etc/httpd/conf",
     )

certbot-apache/certbot_apache/_internal/override_centos.py

@@ -1,25 +1,23 @@
 """ Distribution specific override class for CentOS family (RHEL, Fedora) """
 import logging
+from typing import cast
+from typing import List
 
-import zope.interface
-
-from acme.magic_typing import List
 from certbot import errors
-from certbot import interfaces
 from certbot import util
 from certbot.errors import MisconfigurationError
 from certbot_apache._internal import apache_util
 from certbot_apache._internal import configurator
 from certbot_apache._internal import parser
+from certbot_apache._internal.configurator import OsOptions
 
 logger = logging.getLogger(__name__)
 
 
-@zope.interface.provider(interfaces.IPluginFactory)
 class CentOSConfigurator(configurator.ApacheConfigurator):
     """CentOS specific ApacheConfigurator override class"""
 
-    OS_DEFAULTS = dict(
+    OS_DEFAULTS = OsOptions(
         server_root="/etc/httpd",
         vhost_root="/etc/httpd/conf.d",
         vhost_files="*.conf",
@@ -29,11 +27,6 @@ class CentOSConfigurator(configurator.ApacheConfigurator):
         restart_cmd=['apachectl', 'graceful'],
         restart_cmd_alt=['apachectl', 'restart'],
         conftest_cmd=['apachectl', 'configtest'],
-        enmod=None,
-        dismod=None,
-        le_vhost_ext="-le-ssl.conf",
-        handle_modules=False,
-        handle_sites=False,
         challenge_location="/etc/httpd/conf.d",
     )
 
@@ -49,7 +42,7 @@ class CentOSConfigurator(configurator.ApacheConfigurator):
         fedora = os_info[0].lower() == "fedora"
 
         try:
-            super(CentOSConfigurator, self).config_test()
+            super().config_test()
         except errors.MisconfigurationError:
             if fedora:
                 self._try_restart_fedora()
@@ -58,7 +51,7 @@ class CentOSConfigurator(configurator.ApacheConfigurator):
 
     def _try_restart_fedora(self):
         """
-        Tries to restart httpd using systemctl to generate the self signed keypair.
+        Tries to restart httpd using systemctl to generate the self signed key pair.
         """
 
         try:
@@ -67,20 +60,22 @@ class CentOSConfigurator(configurator.ApacheConfigurator):
             raise errors.MisconfigurationError(str(err))
 
         # Finish with actual config check to see if systemctl restart helped
-        super(CentOSConfigurator, self).config_test()
+        super().config_test()
 
     def _prepare_options(self):
         """
         Override the options dictionary initialization in order to support
         alternative restart cmd used in CentOS.
         """
-        super(CentOSConfigurator, self)._prepare_options()
-        self.options["restart_cmd_alt"][0] = self.option("ctl")
+        super()._prepare_options()
+        if not self.options.restart_cmd_alt:  # pragma: no cover
+            raise ValueError("OS option restart_cmd_alt must be set for CentOS.")
+        self.options.restart_cmd_alt[0] = self.options.ctl
 
     def get_parser(self):
         """Initializes the ApacheParser"""
         return CentOSParser(
-            self.option("server_root"), self.option("vhost_root"),
+            self.options.server_root, self.options.vhost_root,
             self.version, configurator=self)
 
     def _deploy_cert(self, *args, **kwargs):  # pylint: disable=arguments-differ
@@ -89,7 +84,7 @@ class CentOSConfigurator(configurator.ApacheConfigurator):
         has "LoadModule ssl_module..." before parsing the VirtualHost configuration
         that was created by Certbot
         """
-        super(CentOSConfigurator, self)._deploy_cert(*args, **kwargs)
+        super()._deploy_cert(*args, **kwargs)
         if self.version < (2, 4, 0):
             self._deploy_loadmodule_ssl_if_needed()
 
@@ -101,9 +96,9 @@ class CentOSConfigurator(configurator.ApacheConfigurator):
 
         loadmods = self.parser.find_dir("LoadModule", "ssl_module", exclude=False)
 
-        correct_ifmods = []  # type: List[str]
-        loadmod_args = []  # type: List[str]
-        loadmod_paths = []  # type: List[str]
+        correct_ifmods: List[str] = []
+        loadmod_args: List[str] = []
+        loadmod_paths: List[str] = []
         for m in loadmods:
             noarg_path = m.rpartition("/")[0]
             path_args = self.parser.get_all_args(noarg_path)
@@ -117,8 +112,9 @@ class CentOSConfigurator(configurator.ApacheConfigurator):
             else:
                 loadmod_args = path_args
 
-            if self.parser.not_modssl_ifmodule(noarg_path):  # pylint: disable=no-member
-                if self.parser.loc["default"] in noarg_path:
+            centos_parser: CentOSParser = cast(CentOSParser, self.parser)
+            if centos_parser.not_modssl_ifmodule(noarg_path):
+                if centos_parser.loc["default"] in noarg_path:
                     # LoadModule already in the main configuration file
                     if ("ifmodule/" in noarg_path.lower() or
                         "ifmodule[1]" in noarg_path.lower()):
@@ -166,19 +162,19 @@ class CentOSParser(parser.ApacheParser):
     def __init__(self, *args, **kwargs):
         # CentOS specific configuration file for Apache
         self.sysconfig_filep = "/etc/sysconfig/httpd"
-        super(CentOSParser, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def update_runtime_variables(self):
         """ Override for update_runtime_variables for custom parsing """
         # Opportunistic, works if SELinux not enforced
-        super(CentOSParser, self).update_runtime_variables()
+        super().update_runtime_variables()
         self.parse_sysconfig_var()
 
     def parse_sysconfig_var(self):
         """ Parses Apache CLI options from CentOS configuration file """
         defines = apache_util.parse_define_file(self.sysconfig_filep, "OPTIONS")
-        for k in defines:
-            self.variables[k] = defines[k]
+        for k, v in defines.items():
+            self.variables[k] = v
 
     def not_modssl_ifmodule(self, path):
         """Checks if the provided Augeas path has argument !mod_ssl"""

certbot-apache/certbot_apache/_internal/override_darwin.py

@@ -1,27 +1,17 @@
 """ Distribution specific override class for macOS """
-import zope.interface
-
-from certbot import interfaces
 from certbot_apache._internal import configurator
+from certbot_apache._internal.configurator import OsOptions
 
 
-@zope.interface.provider(interfaces.IPluginFactory)
 class DarwinConfigurator(configurator.ApacheConfigurator):
     """macOS specific ApacheConfigurator override class"""
 
-    OS_DEFAULTS = dict(
-        server_root="/etc/apache2",
+    OS_DEFAULTS = OsOptions(
         vhost_root="/etc/apache2/other",
         vhost_files="*.conf",
-        logs_root="/var/log/apache2",
         ctl="apachectl",
         version_cmd=['apachectl', '-v'],
         restart_cmd=['apachectl', 'graceful'],
         conftest_cmd=['apachectl', 'configtest'],
-        enmod=None,
-        dismod=None,
-        le_vhost_ext="-le-ssl.conf",
-        handle_modules=False,
-        handle_sites=False,
         challenge_location="/etc/apache2/other",
     )

certbot-apache/certbot_apache/_internal/override_debian.py

@@ -1,38 +1,25 @@
 """ Distribution specific override class for Debian family (Ubuntu/Debian) """
 import logging
 
-import zope.interface
-
 from certbot import errors
-from certbot import interfaces
 from certbot import util
 from certbot.compat import filesystem
 from certbot.compat import os
 from certbot_apache._internal import apache_util
 from certbot_apache._internal import configurator
+from certbot_apache._internal.configurator import OsOptions
 
 logger = logging.getLogger(__name__)
 
 
-@zope.interface.provider(interfaces.IPluginFactory)
 class DebianConfigurator(configurator.ApacheConfigurator):
     """Debian specific ApacheConfigurator override class"""
 
-    OS_DEFAULTS = dict(
-        server_root="/etc/apache2",
-        vhost_root="/etc/apache2/sites-available",
-        vhost_files="*",
-        logs_root="/var/log/apache2",
-        ctl="apache2ctl",
-        version_cmd=['apache2ctl', '-v'],
-        restart_cmd=['apache2ctl', 'graceful'],
-        conftest_cmd=['apache2ctl', 'configtest'],
+    OS_DEFAULTS = OsOptions(
         enmod="a2enmod",
         dismod="a2dismod",
-        le_vhost_ext="-le-ssl.conf",
         handle_modules=True,
         handle_sites=True,
-        challenge_location="/etc/apache2",
     )
 
     def enable_site(self, vhost):
@@ -57,7 +44,7 @@ class DebianConfigurator(configurator.ApacheConfigurator):
         if not os.path.isdir(os.path.dirname(enabled_path)):
             # For some reason, sites-enabled / sites-available do not exist
             # Call the parent method
-            return super(DebianConfigurator, self).enable_site(vhost)
+            return super().enable_site(vhost)
         self.reverter.register_file_creation(False, enabled_path)
         try:
             os.symlink(vhost.filep, enabled_path)
@@ -67,7 +54,7 @@ class DebianConfigurator(configurator.ApacheConfigurator):
                 # Already in shape
                 vhost.enabled = True
                 return None
-            logger.warning(
+            logger.error(
                 "Could not symlink %s to %s, got error: %s", enabled_path,
                 vhost.filep, err.strerror)
             errstring = ("Encountered error while trying to enable a " +
@@ -131,11 +118,11 @@ class DebianConfigurator(configurator.ApacheConfigurator):
         # Generate reversal command.
         # Try to be safe here... check that we can probably reverse before
         # applying enmod command
-        if not util.exe_exists(self.option("dismod")):
+        if not util.exe_exists(self.options.dismod):
             raise errors.MisconfigurationError(
                 "Unable to find a2dismod, please make sure a2enmod and "
                 "a2dismod are configured correctly for certbot.")
 
         self.reverter.register_undo_command(
-            temp, [self.option("dismod"), "-f", mod_name])
-        util.run_script([self.option("enmod"), mod_name])
+            temp, [self.options.dismod, "-f", mod_name])
+        util.run_script([self.options.enmod, mod_name])

certbot-apache/certbot_apache/_internal/override_fedora.py

@@ -1,19 +1,16 @@
 """ Distribution specific override class for Fedora 29+ """
-import zope.interface
-
 from certbot import errors
-from certbot import interfaces
 from certbot import util
 from certbot_apache._internal import apache_util
 from certbot_apache._internal import configurator
 from certbot_apache._internal import parser
+from certbot_apache._internal.configurator import OsOptions
 
 
-@zope.interface.provider(interfaces.IPluginFactory)
 class FedoraConfigurator(configurator.ApacheConfigurator):
     """Fedora 29+ specific ApacheConfigurator override class"""
 
-    OS_DEFAULTS = dict(
+    OS_DEFAULTS = OsOptions(
         server_root="/etc/httpd",
         vhost_root="/etc/httpd/conf.d",
         vhost_files="*.conf",
@@ -23,11 +20,6 @@ class FedoraConfigurator(configurator.ApacheConfigurator):
         restart_cmd=['apachectl', 'graceful'],
         restart_cmd_alt=['apachectl', 'restart'],
         conftest_cmd=['apachectl', 'configtest'],
-        enmod=None,
-        dismod=None,
-        le_vhost_ext="-le-ssl.conf",
-        handle_modules=False,
-        handle_sites=False,
         challenge_location="/etc/httpd/conf.d",
     )
 
@@ -39,19 +31,19 @@ class FedoraConfigurator(configurator.ApacheConfigurator):
         during the first (re)start of httpd.
         """
         try:
-            super(FedoraConfigurator, self).config_test()
+            super().config_test()
         except errors.MisconfigurationError:
             self._try_restart_fedora()
 
     def get_parser(self):
         """Initializes the ApacheParser"""
         return FedoraParser(
-            self.option("server_root"), self.option("vhost_root"),
+            self.options.server_root, self.options.vhost_root,
             self.version, configurator=self)
 
     def _try_restart_fedora(self):
         """
-        Tries to restart httpd using systemctl to generate the self signed keypair.
+        Tries to restart httpd using systemctl to generate the self signed key pair.
         """
         try:
             util.run_script(['systemctl', 'restart', 'httpd'])
@@ -59,7 +51,7 @@ class FedoraConfigurator(configurator.ApacheConfigurator):
             raise errors.MisconfigurationError(str(err))
 
         # Finish with actual config check to see if systemctl restart helped
-        super(FedoraConfigurator, self).config_test()
+        super().config_test()
 
     def _prepare_options(self):
         """
@@ -67,10 +59,12 @@ class FedoraConfigurator(configurator.ApacheConfigurator):
         instead of httpd and so take advantages of this new bash script in newer versions
         of Fedora to restart httpd.
         """
-        super(FedoraConfigurator, self)._prepare_options()
-        self.options["restart_cmd"][0] = 'apachectl'
-        self.options["restart_cmd_alt"][0] = 'apachectl'
-        self.options["conftest_cmd"][0] = 'apachectl'
+        super()._prepare_options()
+        self.options.restart_cmd[0] = 'apachectl'
+        if not self.options.restart_cmd_alt:  # pragma: no cover
+            raise ValueError("OS option restart_cmd_alt must be set for Fedora.")
+        self.options.restart_cmd_alt[0] = 'apachectl'
+        self.options.conftest_cmd[0] = 'apachectl'
 
 
 class FedoraParser(parser.ApacheParser):
@@ -78,16 +72,16 @@ class FedoraParser(parser.ApacheParser):
     def __init__(self, *args, **kwargs):
         # Fedora 29+ specific configuration file for Apache
         self.sysconfig_filep = "/etc/sysconfig/httpd"
-        super(FedoraParser, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def update_runtime_variables(self):
         """ Override for update_runtime_variables for custom parsing """
         # Opportunistic, works if SELinux not enforced
-        super(FedoraParser, self).update_runtime_variables()
+        super().update_runtime_variables()
         self._parse_sysconfig_var()
 
     def _parse_sysconfig_var(self):
         """ Parses Apache CLI options from Fedora configuration file """
         defines = apache_util.parse_define_file(self.sysconfig_filep, "OPTIONS")
-        for k in defines:
-            self.variables[k] = defines[k]
+        for k, v in defines.items():
+            self.variables[k] = v

certbot-apache/certbot_apache/_internal/override_gentoo.py

@@ -1,31 +1,18 @@
 """ Distribution specific override class for Gentoo Linux """
-import zope.interface
-
-from certbot import interfaces
 from certbot_apache._internal import apache_util
 from certbot_apache._internal import configurator
 from certbot_apache._internal import parser
+from certbot_apache._internal.configurator import OsOptions
 
 
-@zope.interface.provider(interfaces.IPluginFactory)
 class GentooConfigurator(configurator.ApacheConfigurator):
     """Gentoo specific ApacheConfigurator override class"""
 
-    OS_DEFAULTS = dict(
+    OS_DEFAULTS = OsOptions(
         server_root="/etc/apache2",
         vhost_root="/etc/apache2/vhosts.d",
         vhost_files="*.conf",
-        logs_root="/var/log/apache2",
-        ctl="apache2ctl",
-        version_cmd=['apache2ctl', '-v'],
-        restart_cmd=['apache2ctl', 'graceful'],
         restart_cmd_alt=['apache2ctl', 'restart'],
-        conftest_cmd=['apache2ctl', 'configtest'],
-        enmod=None,
-        dismod=None,
-        le_vhost_ext="-le-ssl.conf",
-        handle_modules=False,
-        handle_sites=False,
         challenge_location="/etc/apache2/vhosts.d",
     )
 
@@ -34,13 +21,15 @@ class GentooConfigurator(configurator.ApacheConfigurator):
         Override the options dictionary initialization in order to support
         alternative restart cmd used in Gentoo.
         """
-        super(GentooConfigurator, self)._prepare_options()
-        self.options["restart_cmd_alt"][0] = self.option("ctl")
+        super()._prepare_options()
+        if not self.options.restart_cmd_alt:  # pragma: no cover
+            raise ValueError("OS option restart_cmd_alt must be set for Gentoo.")
+        self.options.restart_cmd_alt[0] = self.options.ctl
 
     def get_parser(self):
         """Initializes the ApacheParser"""
         return GentooParser(
-            self.option("server_root"), self.option("vhost_root"),
+            self.options.server_root, self.options.vhost_root,
             self.version, configurator=self)
 
 
@@ -49,7 +38,7 @@ class GentooParser(parser.ApacheParser):
     def __init__(self, *args, **kwargs):
         # Gentoo specific configuration file for Apache2
         self.apacheconfig_filep = "/etc/conf.d/apache2"
-        super(GentooParser, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def update_runtime_variables(self):
         """ Override for update_runtime_variables for custom parsing """
@@ -60,12 +49,12 @@ class GentooParser(parser.ApacheParser):
         """ Parses Apache CLI options from Gentoo configuration file """
         defines = apache_util.parse_define_file(self.apacheconfig_filep,
                                                 "APACHE2_OPTS")
-        for k in defines:
-            self.variables[k] = defines[k]
+        for k, v in defines.items():
+            self.variables[k] = v
 
     def update_modules(self):
         """Get loaded modules from httpd process, and add them to DOM"""
-        mod_cmd = [self.configurator.option("ctl"), "modules"]
+        mod_cmd = [self.configurator.options.ctl, "modules"]
         matches = apache_util.parse_from_subprocess(mod_cmd, r"(.*)_module")
         for mod in matches:
             self.add_mod(mod.strip())

certbot-apache/certbot_apache/_internal/override_suse.py

@@ -1,27 +1,19 @@
 """ Distribution specific override class for OpenSUSE """
-import zope.interface
-
-from certbot import interfaces
 from certbot_apache._internal import configurator
+from certbot_apache._internal.configurator import OsOptions
 
 
-@zope.interface.provider(interfaces.IPluginFactory)
 class OpenSUSEConfigurator(configurator.ApacheConfigurator):
     """OpenSUSE specific ApacheConfigurator override class"""
 
-    OS_DEFAULTS = dict(
-        server_root="/etc/apache2",
+    OS_DEFAULTS = OsOptions(
         vhost_root="/etc/apache2/vhosts.d",
         vhost_files="*.conf",
-        logs_root="/var/log/apache2",
-        ctl="apache2ctl",
-        version_cmd=['apache2ctl', '-v'],
-        restart_cmd=['apache2ctl', 'graceful'],
-        conftest_cmd=['apache2ctl', 'configtest'],
+        ctl="apachectl",
+        version_cmd=['apachectl', '-v'],
+        restart_cmd=['apachectl', 'graceful'],
+        conftest_cmd=['apachectl', 'configtest'],
         enmod="a2enmod",
         dismod="a2dismod",
-        le_vhost_ext="-le-ssl.conf",
-        handle_modules=False,
-        handle_sites=False,
         challenge_location="/etc/apache2/vhosts.d",
     )

certbot-apache/certbot_apache/_internal/override_void.py

@@ -0,0 +1,19 @@
+""" Distribution specific override class for Void Linux """
+from certbot_apache._internal import configurator
+from certbot_apache._internal.configurator import OsOptions
+
+
+class VoidConfigurator(configurator.ApacheConfigurator):
+    """Void Linux specific ApacheConfigurator override class"""
+
+    OS_DEFAULTS = OsOptions(
+        server_root="/etc/apache",
+        vhost_root="/etc/apache/extra",
+        vhost_files="*.conf",
+        logs_root="/var/log/httpd",
+        ctl="apachectl",
+        version_cmd=['apachectl', '-v'],
+        restart_cmd=['apachectl', 'graceful'],
+        conftest_cmd=['apachectl', 'configtest'],
+        challenge_location="/etc/apache/extra",
+    )

certbot-apache/certbot_apache/_internal/parser.py

@@ -3,21 +3,24 @@ import copy
 import fnmatch
 import logging
 import re
-import sys
+from typing import Dict
+from typing import List
+from typing import Optional
 
-import six
-
-from acme.magic_typing import Dict
-from acme.magic_typing import List
 from certbot import errors
 from certbot.compat import os
 from certbot_apache._internal import apache_util
 from certbot_apache._internal import constants
 
+try:
+    from augeas import Augeas
+except ImportError:  # pragma: no cover
+    Augeas = None  # type: ignore
+
 logger = logging.getLogger(__name__)
 
 
-class ApacheParser(object):
+class ApacheParser:
     """Class handles the fine details of parsing the Apache Configuration.
 
     .. todo:: Make parsing general... remove sites-available etc...
@@ -42,8 +45,7 @@ class ApacheParser(object):
         self.configurator = configurator
 
         # Initialize augeas
-        self.aug = None
-        self.init_augeas()
+        self.aug = init_augeas()
 
         if not self.check_aug_version():
             raise errors.NotSupportedError(
@@ -51,9 +53,9 @@ class ApacheParser(object):
                 "version 1.2.0 or higher, please make sure you have you have "
                 "those installed.")
 
-        self.modules = {}  # type: Dict[str, str]
-        self.parser_paths = {}  # type: Dict[str, List[str]]
-        self.variables = {}  # type: Dict[str, str]
+        self.modules: Dict[str, Optional[str]] = {}
+        self.parser_paths: Dict[str, List[str]] = {}
+        self.variables: Dict[str, str] = {}
 
         # Find configuration root and make sure augeas can parse it.
         self.root = os.path.abspath(root)
@@ -79,30 +81,13 @@ class ApacheParser(object):
         # Must also attempt to parse additional virtual host root
         if vhostroot:
             self.parse_file(os.path.abspath(vhostroot) + "/" +
-                            self.configurator.option("vhost_files"))
+                            self.configurator.options.vhost_files)
 
         # check to see if there were unparsed define statements
         if version < (2, 4):
             if self.find_dir("Define", exclude=False):
                 raise errors.PluginError("Error parsing runtime variables")
 
-    def init_augeas(self):
-        """ Initialize the actual Augeas instance """
-
-        try:
-            import augeas
-        except ImportError:  # pragma: no cover
-            raise errors.NoInstallationError("Problem in Augeas installation")
-
-        self.aug = augeas.Augeas(
-            # specify a directory to load our preferred lens from
-            loadpath=constants.AUGEAS_LENS_DIR,
-            # Do not save backup (we do it ourselves), do not load
-            # anything by default
-            flags=(augeas.Augeas.NONE |
-                   augeas.Augeas.NO_MODL_AUTOLOAD |
-                   augeas.Augeas.ENABLE_SPAN))
-
     def check_parsing_errors(self, lens):
         """Verify Augeas can parse all of the lens files.
 
@@ -266,7 +251,7 @@ class ApacheParser(object):
             the iteration issue.  Else... parse and enable mods at same time.
 
         """
-        mods = {}  # type: Dict[str, str]
+        mods: Dict[str, str] = {}
         matches = self.find_dir("LoadModule")
         iterator = iter(matches)
         # Make sure prev_size != cur_size for do: while: iteration
@@ -275,7 +260,7 @@ class ApacheParser(object):
         while len(mods) != prev_size:
             prev_size = len(mods)
 
-            for match_name, match_filename in six.moves.zip(
+            for match_name, match_filename in zip(
                     iterator, iterator):
                 mod_name = self.get_arg(match_name)
                 mod_filename = self.get_arg(match_filename)
@@ -297,7 +282,7 @@ class ApacheParser(object):
     def update_defines(self):
         """Updates the dictionary of known variables in the configuration"""
 
-        self.variables = apache_util.parse_defines(self.configurator.option("ctl"))
+        self.variables = apache_util.parse_defines(self.configurator.options.ctl)
 
     def update_includes(self):
         """Get includes from httpd process, and add them to DOM if needed"""
@@ -307,7 +292,7 @@ class ApacheParser(object):
         # configuration files
         _ = self.find_dir("Include")
 
-        matches = apache_util.parse_includes(self.configurator.option("ctl"))
+        matches = apache_util.parse_includes(self.configurator.options.ctl)
         if matches:
             for i in matches:
                 if not self.parsed_in_current(i):
@@ -316,7 +301,7 @@ class ApacheParser(object):
     def update_modules(self):
         """Get loaded modules from httpd process, and add them to DOM"""
 
-        matches = apache_util.parse_modules(self.configurator.option("ctl"))
+        matches = apache_util.parse_modules(self.configurator.options.ctl)
         for mod in matches:
             self.add_mod(mod.strip())
 
@@ -455,7 +440,11 @@ class ApacheParser(object):
         :type args: list or str
         """
         first_dir = aug_conf_path + "/directive[1]"
-        self.aug.insert(first_dir, "directive", True)
+        if self.aug.get(first_dir):
+            self.aug.insert(first_dir, "directive", True)
+        else:
+            self.aug.set(first_dir, "directive")
+
         self.aug.set(first_dir, dirname)
         if isinstance(args, list):
             for i, value in enumerate(args, 1):
@@ -553,7 +542,7 @@ class ApacheParser(object):
         else:
             arg_suffix = "/*[self::arg=~regexp('%s')]" % case_i(arg)
 
-        ordered_matches = []  # type: List[str]
+        ordered_matches: List[str] = []
 
         # TODO: Wildcards should be included in alphabetical order
         # https://httpd.apache.org/docs/2.4/mod/core.html#include
@@ -731,7 +720,6 @@ class ApacheParser(object):
         privileged users.
 
         https://apr.apache.org/docs/apr/2.0/apr__fnmatch_8h_source.html
-        http://apache2.sourcearchive.com/documentation/2.2.16-6/apr__fnmatch_8h_source.html
 
         :param str clean_fn_match: Apache style filename match, like globs
 
@@ -739,9 +727,6 @@ class ApacheParser(object):
         :rtype: str
 
         """
-        if sys.version_info < (3, 6):
-            # This strips off final /Z(?ms)
-            return fnmatch.translate(clean_fn_match)[:-7]  # pragma: no cover
         # Since Python 3.6, it returns a different pattern like (?s:.*\.load)\Z
         return fnmatch.translate(clean_fn_match)[4:-3]  # pragma: no cover
 
@@ -799,7 +784,7 @@ class ApacheParser(object):
     def _parsed_by_parser_paths(self, filep, paths):
         """Helper function that searches through provided paths and returns
         True if file path is found in the set"""
-        for directory in paths.keys():
+        for directory in paths:
             for filename in paths[directory]:
                 if fnmatch.fnmatch(filep, os.path.join(directory, filename)):
                     return True
@@ -956,3 +941,19 @@ def get_aug_path(file_path):
 
     """
     return "/files%s" % file_path
+
+
+def init_augeas() -> Augeas:
+    """ Initialize the actual Augeas instance """
+
+    if not Augeas:  # pragma: no cover
+        raise errors.NoInstallationError("Problem in Augeas installation")
+
+    return Augeas(
+        # specify a directory to load our preferred lens from
+        loadpath=constants.AUGEAS_LENS_DIR,
+        # Do not save backup (we do it ourselves), do not load
+        # anything by default
+        flags=(Augeas.NONE |
+               Augeas.NO_MODL_AUTOLOAD |
+               Augeas.ENABLE_SPAN))

certbot-apache/local-oldest-requirements.txt

@@ -1,3 +0,0 @@
-# Remember to update setup.py to match the package versions below.
-acme[dev]==0.29.0
-certbot[dev]==1.1.0

certbot-apache/setup.py

@@ -1,61 +1,31 @@
-from distutils.version import StrictVersion
-import sys
-
-from setuptools import __version__ as setuptools_version
 from setuptools import find_packages
 from setuptools import setup
-from setuptools.command.test import test as TestCommand
 
-version = '1.6.0.dev0'
+version = '1.20.0.dev0'
 
-# Remember to update local-oldest-requirements.txt when changing the minimum
-# acme/certbot version.
 install_requires = [
-    'acme>=0.29.0',
-    'certbot>=1.1.0',
+    # We specify the minimum acme and certbot version as the current plugin
+    # version for simplicity. See
+    # https://github.com/certbot/certbot/issues/8761 for more info.
+    f'acme>={version}',
+    f'certbot>={version}',
     'python-augeas',
-    'setuptools',
-    'zope.component',
-    'zope.interface',
+    'setuptools>=39.0.1',
 ]
 
-setuptools_known_environment_markers = (StrictVersion(setuptools_version) >= StrictVersion('36.2'))
-if setuptools_known_environment_markers:
-    install_requires.append('mock ; python_version < "3.3"')
-elif 'bdist_wheel' in sys.argv[1:]:
-    raise RuntimeError('Error, you are trying to build certbot wheels using an old version '
-                       'of setuptools. Version 36.2+ of setuptools is required.')
-elif sys.version_info < (3,3):
-    install_requires.append('mock')
-
 dev_extras = [
     'apacheconfig>=0.3.2',
 ]
 
-class PyTest(TestCommand):
-    user_options = []
-
-    def initialize_options(self):
-        TestCommand.initialize_options(self)
-        self.pytest_args = ''
-
-    def run_tests(self):
-        import shlex
-        # import here, cause outside the eggs aren't loaded
-        import pytest
-        errno = pytest.main(shlex.split(self.pytest_args))
-        sys.exit(errno)
-
-
 setup(
     name='certbot-apache',
     version=version,
     description="Apache plugin for Certbot",
     url='https://github.com/letsencrypt/letsencrypt',
     author="Certbot Project",
-    author_email='client-dev@letsencrypt.org',
+    author_email='certbot-dev@eff.org',
     license='Apache License 2.0',
-    python_requires='>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*',
+    python_requires='>=3.6',
     classifiers=[
         'Development Status :: 5 - Production/Stable',
         'Environment :: Plugins',
@@ -63,13 +33,11 @@ setup(
         'License :: OSI Approved :: Apache Software License',
         'Operating System :: POSIX :: Linux',
         'Programming Language :: Python',
-        'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
+        'Programming Language :: Python :: 3.9',
         'Topic :: Internet :: WWW/HTTP',
         'Topic :: Security',
         'Topic :: System :: Installation/Setup',
@@ -89,7 +57,4 @@ setup(
             'apache = certbot_apache._internal.entrypoint:ENTRYPOINT',
         ],
     },
-    test_suite='certbot_apache',
-    tests_require=["pytest"],
-    cmdclass={"test": PyTest},
 )

certbot-apache/tests/apache-conf-files/apache-conf-test

@@ -52,7 +52,7 @@ function Cleanup() {
 # if our environment asks us to enable modules, do our best!
 if [ "$1" = --debian-modules ] ; then
     sudo apt-get install -y apache2
-    sudo apt-get install -y libapache2-mod-wsgi
+    sudo apt-get install -y libapache2-mod-wsgi-py3
     sudo apt-get install -y libapache2-mod-macro
 
     for mod in  ssl rewrite macro wsgi deflate userdir version mime setenvif ; do

certbot-apache/tests/augeasnode_test.py

@@ -1,4 +1,6 @@
 """Tests for AugeasParserNode classes"""
+from typing import List
+
 try:
     import mock
 except ImportError: # pragma: no cover
@@ -27,7 +29,7 @@ class AugeasParserNodeTest(util.ApacheTest):  # pylint: disable=too-many-public-
     """Test AugeasParserNode using available test configurations"""
 
     def setUp(self):  # pylint: disable=arguments-differ
-        super(AugeasParserNodeTest, self).setUp()
+        super().setUp()
 
         with mock.patch("certbot_apache._internal.configurator.ApacheConfigurator.get_parsernode_root") as mock_parsernode:
             mock_parsernode.side_effect = _get_augeasnode_mock(
@@ -107,7 +109,7 @@ class AugeasParserNodeTest(util.ApacheTest):  # pylint: disable=too-many-public-
 
     def test_set_parameters(self):
         servernames = self.config.parser_root.find_directives("servername")
-        names = []  # type: List[str]
+        names: List[str] = []
         for servername in servernames:
             names += servername.parameters
         self.assertFalse("going_to_set_this" in names)

certbot-apache/tests/autohsts_test.py

@@ -7,7 +7,6 @@ try:
     import mock
 except ImportError: # pragma: no cover
     from unittest import mock # type: ignore
-import six  # pylint: disable=unused-import  # six is used in mock.patch()
 
 from certbot import errors
 from certbot_apache._internal import constants
@@ -19,7 +18,7 @@ class AutoHSTSTest(util.ApacheTest):
     # pylint: disable=protected-access
 
     def setUp(self):  # pylint: disable=arguments-differ
-        super(AutoHSTSTest, self).setUp()
+        super().setUp()
 
         self.config = util.get_apache_configurator(
             self.config_path, self.vhost_path, self.config_dir, self.work_dir)
@@ -147,7 +146,7 @@ class AutoHSTSTest(util.ApacheTest):
     @mock.patch("certbot_apache._internal.display_ops.select_vhost")
     def test_autohsts_no_ssl_vhost(self, mock_select):
         mock_select.return_value = self.vh_truth[0]
-        with mock.patch("certbot_apache._internal.configurator.logger.warning") as mock_log:
+        with mock.patch("certbot_apache._internal.configurator.logger.error") as mock_log:
             self.assertRaises(errors.PluginError,
                               self.config.enable_autohsts,
                               mock.MagicMock(), "invalid.example.com")
@@ -180,7 +179,7 @@ class AutoHSTSTest(util.ApacheTest):
         self.config._autohsts_fetch_state()
         self.config._autohsts["orphan_id"] = {"laststep": 999, "timestamp": 0}
         self.config._autohsts_save_state()
-        with mock.patch("certbot_apache._internal.configurator.logger.warning") as mock_log:
+        with mock.patch("certbot_apache._internal.configurator.logger.error") as mock_log:
             self.config.deploy_autohsts(mock.MagicMock())
             self.assertTrue(mock_log.called)
             self.assertTrue(

certbot-apache/tests/centos6_test.py

@@ -1,5 +1,6 @@
 """Test for certbot_apache._internal.configurator for CentOS 6 overrides"""
 import unittest
+from unittest import mock
 
 from certbot.compat import os
 from certbot.errors import MisconfigurationError
@@ -36,9 +37,9 @@ class CentOS6Tests(util.ApacheTest):
         test_dir = "centos6_apache/apache"
         config_root = "centos6_apache/apache/httpd"
         vhost_root = "centos6_apache/apache/httpd/conf.d"
-        super(CentOS6Tests, self).setUp(test_dir=test_dir,
-                                        config_root=config_root,
-                                        vhost_root=vhost_root)
+        super().setUp(test_dir=test_dir,
+                      config_root=config_root,
+                      vhost_root=vhost_root)
 
         self.config = util.get_apache_configurator(
             self.config_path, self.vhost_path, self.config_dir, self.work_dir,
@@ -65,7 +66,8 @@ class CentOS6Tests(util.ApacheTest):
                 raise Exception("Missed: %s" % vhost)  # pragma: no cover
         self.assertEqual(found, 2)
 
-    def test_loadmod_default(self):
+    @mock.patch("certbot_apache._internal.configurator.display_util.notify")
+    def test_loadmod_default(self, unused_mock_notify):
         ssl_loadmods = self.config.parser.find_dir(
             "LoadModule", "ssl_module", exclude=False)
         self.assertEqual(len(ssl_loadmods), 1)
@@ -95,7 +97,8 @@ class CentOS6Tests(util.ApacheTest):
             ifmod_args = self.config.parser.get_all_args(lm[:-17])
             self.assertTrue("!mod_ssl.c" in ifmod_args)
 
-    def test_loadmod_multiple(self):
+    @mock.patch("certbot_apache._internal.configurator.display_util.notify")
+    def test_loadmod_multiple(self, unused_mock_notify):
         sslmod_args = ["ssl_module", "modules/mod_ssl.so"]
         # Adds another LoadModule to main httpd.conf in addtition to ssl.conf
         self.config.parser.add_dir(self.config.parser.loc["default"], "LoadModule",
@@ -115,7 +118,8 @@ class CentOS6Tests(util.ApacheTest):
         for mod in post_loadmods:
             self.assertTrue(self.config.parser.not_modssl_ifmodule(mod))  #pylint: disable=no-member
 
-    def test_loadmod_rootconf_exists(self):
+    @mock.patch("certbot_apache._internal.configurator.display_util.notify")
+    def test_loadmod_rootconf_exists(self, unused_mock_notify):
         sslmod_args = ["ssl_module", "modules/mod_ssl.so"]
         rootconf_ifmod = self.config.parser.get_ifmod(
             parser.get_aug_path(self.config.parser.loc["default"]),
@@ -142,7 +146,8 @@ class CentOS6Tests(util.ApacheTest):
             self.config.parser.get_all_args(mods[0][:-7]),
             sslmod_args)
 
-    def test_neg_loadmod_already_on_path(self):
+    @mock.patch("certbot_apache._internal.configurator.display_util.notify")
+    def test_neg_loadmod_already_on_path(self, unused_mock_notify):
         loadmod_args = ["ssl_module", "modules/mod_ssl.so"]
         ifmod = self.config.parser.get_ifmod(
             self.vh_truth[1].path, "!mod_ssl.c", beginning=True)
@@ -185,7 +190,8 @@ class CentOS6Tests(util.ApacheTest):
         # Make sure that none was changed
         self.assertEqual(pre_matches, post_matches)
 
-    def test_loadmod_not_found(self):
+    @mock.patch("certbot_apache._internal.configurator.display_util.notify")
+    def test_loadmod_not_found(self, unused_mock_notify):
         # Remove all existing LoadModule ssl_module... directives
         orig_loadmods = self.config.parser.find_dir("LoadModule",
                                                     "ssl_module",

certbot-apache/tests/centos_test.py

@@ -41,9 +41,9 @@ class FedoraRestartTest(util.ApacheTest):
         test_dir = "centos7_apache/apache"
         config_root = "centos7_apache/apache/httpd"
         vhost_root = "centos7_apache/apache/httpd/conf.d"
-        super(FedoraRestartTest, self).setUp(test_dir=test_dir,
-                                             config_root=config_root,
-                                             vhost_root=vhost_root)
+        super().setUp(test_dir=test_dir,
+                      config_root=config_root,
+                      vhost_root=vhost_root)
         self.config = util.get_apache_configurator(
             self.config_path, self.vhost_path, self.config_dir, self.work_dir,
             os_info="fedora_old")
@@ -96,9 +96,9 @@ class MultipleVhostsTestCentOS(util.ApacheTest):
         test_dir = "centos7_apache/apache"
         config_root = "centos7_apache/apache/httpd"
         vhost_root = "centos7_apache/apache/httpd/conf.d"
-        super(MultipleVhostsTestCentOS, self).setUp(test_dir=test_dir,
-                                                    config_root=config_root,
-                                                    vhost_root=vhost_root)
+        super().setUp(test_dir=test_dir,
+                      config_root=config_root,
+                      vhost_root=vhost_root)
 
         self.config = util.get_apache_configurator(
             self.config_path, self.vhost_path, self.config_dir, self.work_dir,
@@ -140,7 +140,7 @@ class MultipleVhostsTestCentOS(util.ApacheTest):
         self.assertEqual(mock_get.call_count, 3)
         self.assertEqual(len(self.config.parser.modules), 4)
         self.assertEqual(len(self.config.parser.variables), 2)
-        self.assertTrue("TEST2" in self.config.parser.variables.keys())
+        self.assertTrue("TEST2" in self.config.parser.variables)
         self.assertTrue("mod_another.c" in self.config.parser.modules)
 
     def test_get_virtual_hosts(self):
@@ -172,11 +172,11 @@ class MultipleVhostsTestCentOS(util.ApacheTest):
             mock_osi.return_value = ("centos", "7")
             self.config.parser.update_runtime_variables()
 
-        self.assertTrue("mock_define" in self.config.parser.variables.keys())
-        self.assertTrue("mock_define_too" in self.config.parser.variables.keys())
-        self.assertTrue("mock_value" in self.config.parser.variables.keys())
+        self.assertTrue("mock_define" in self.config.parser.variables)
+        self.assertTrue("mock_define_too" in self.config.parser.variables)
+        self.assertTrue("mock_value" in self.config.parser.variables)
         self.assertEqual("TRUE", self.config.parser.variables["mock_value"])
-        self.assertTrue("MOCK_NOSEP" in self.config.parser.variables.keys())
+        self.assertTrue("MOCK_NOSEP" in self.config.parser.variables)
         self.assertEqual("NOSEP_VAL", self.config.parser.variables["NOSEP_TWO"])
 
     @mock.patch("certbot_apache._internal.configurator.util.run_script")

certbot-apache/tests/complex_parsing_test.py

@@ -11,7 +11,7 @@ class ComplexParserTest(util.ParserTest):
     """Apache Parser Test."""
 
     def setUp(self):  # pylint: disable=arguments-differ
-        super(ComplexParserTest, self).setUp(
+        super().setUp(
             "complex_parsing", "complex_parsing")
 
         self.setup_variables()

certbot-apache/tests/configurator_reverter_test.py

@@ -16,7 +16,7 @@ class ConfiguratorReverterTest(util.ApacheTest):
 
 
     def setUp(self):  # pylint: disable=arguments-differ
-        super(ConfiguratorReverterTest, self).setUp()
+        super().setUp()
 
         self.config = util.get_apache_configurator(
             self.config_path, self.vhost_path, self.config_dir, self.work_dir)

certbot-apache/tests/configurator_test.py

@@ -10,7 +10,6 @@ try:
     import mock
 except ImportError: # pragma: no cover
     from unittest import mock # type: ignore
-import six  # pylint: disable=unused-import  # six is used in mock.patch()
 
 from acme import challenges
 from certbot import achallenges
@@ -31,7 +30,7 @@ class MultipleVhostsTest(util.ApacheTest):
     """Test two standard well-configured HTTP vhosts."""
 
     def setUp(self):  # pylint: disable=arguments-differ
-        super(MultipleVhostsTest, self).setUp()
+        super().setUp()
 
         self.config = util.get_apache_configurator(
             self.config_path, self.vhost_path, self.config_dir, self.work_dir)
@@ -104,9 +103,9 @@ class MultipleVhostsTest(util.ApacheTest):
                       "handle_modules", "handle_sites", "ctl"]
         exp = {}
 
-        for k in ApacheConfigurator.OS_DEFAULTS:
+        for k in ApacheConfigurator.OS_DEFAULTS.__dict__.keys():
             if k in parserargs:
-                exp[k.replace("_", "-")] = ApacheConfigurator.OS_DEFAULTS[k]
+                exp[k.replace("_", "-")] = getattr(ApacheConfigurator.OS_DEFAULTS, k)
         # Special cases
         exp["vhost-root"] = None
 
@@ -129,16 +128,15 @@ class MultipleVhostsTest(util.ApacheTest):
     def test_all_configurators_defaults_defined(self):
         from certbot_apache._internal.entrypoint import OVERRIDE_CLASSES
         from certbot_apache._internal.configurator import ApacheConfigurator
-        parameters = set(ApacheConfigurator.OS_DEFAULTS.keys())
+        parameters = set(ApacheConfigurator.OS_DEFAULTS.__dict__.keys())
         for cls in OVERRIDE_CLASSES.values():
-            self.assertTrue(parameters.issubset(set(cls.OS_DEFAULTS.keys())))
+            self.assertTrue(parameters.issubset(set(cls.OS_DEFAULTS.__dict__.keys())))
 
     def test_constant(self):
         self.assertTrue("debian_apache_2_4/multiple_vhosts/apache" in
-                        self.config.option("server_root"))
-        self.assertEqual(self.config.option("nonexistent"), None)
+                        self.config.options.server_root)
 
-    @certbot_util.patch_get_utility()
+    @certbot_util.patch_display_util()
     def test_get_all_names(self, mock_getutility):
         mock_utility = mock_getutility()
         mock_utility.notification = mock.MagicMock(return_value=True)
@@ -147,7 +145,7 @@ class MultipleVhostsTest(util.ApacheTest):
              "nonsym.link", "vhost.in.rootconf", "www.certbot.demo",
              "duplicate.example.com"})
 
-    @certbot_util.patch_get_utility()
+    @certbot_util.patch_display_util()
     @mock.patch("certbot_apache._internal.configurator.socket.gethostbyaddr")
     def test_get_all_names_addrs(self, mock_gethost, mock_getutility):
         mock_gethost.side_effect = [("google.com", "", ""), socket.error]
@@ -339,7 +337,8 @@ class MultipleVhostsTest(util.ApacheTest):
         vhosts = self.config._non_default_vhosts(self.config.vhosts)
         self.assertEqual(len(vhosts), 10)
 
-    def test_deploy_cert_enable_new_vhost(self):
+    @mock.patch('certbot_apache._internal.configurator.display_util.notify')
+    def test_deploy_cert_enable_new_vhost(self, unused_mock_notify):
         # Create
         ssl_vhost = self.config.make_vhost_ssl(self.vh_truth[0])
         self.config.parser.modules["ssl_module"] = None
@@ -377,7 +376,8 @@ class MultipleVhostsTest(util.ApacheTest):
                 self.fail("Include shouldn't be added, as patched find_dir 'finds' existing one") \
                     # pragma: no cover
 
-    def test_deploy_cert(self):
+    @mock.patch('certbot_apache._internal.configurator.display_util.notify')
+    def test_deploy_cert(self, unused_mock_notify):
         self.config.parser.modules["ssl_module"] = None
         self.config.parser.modules["mod_ssl.c"] = None
         self.config.parser.modules["socache_shmcb_module"] = None
@@ -726,7 +726,7 @@ class MultipleVhostsTest(util.ApacheTest):
         # This calls open
         self.config.reverter.register_file_creation = mock.Mock()
         mock_open.side_effect = IOError
-        with mock.patch("six.moves.builtins.open", mock_open):
+        with mock.patch("builtins.open", mock_open):
             self.assertRaises(
                 errors.PluginError,
                 self.config.make_vhost_ssl, self.vh_truth[0])
@@ -893,7 +893,7 @@ class MultipleVhostsTest(util.ApacheTest):
             self.config.enhance, "certbot.demo", "unknown_enhancement")
 
     def test_enhance_no_ssl_vhost(self):
-        with mock.patch("certbot_apache._internal.configurator.logger.warning") as mock_log:
+        with mock.patch("certbot_apache._internal.configurator.logger.error") as mock_log:
             self.assertRaises(errors.PluginError, self.config.enhance,
                               "certbot.demo", "redirect")
             # Check that correct logger.warning was printed
@@ -1292,7 +1292,8 @@ class MultipleVhostsTest(util.ApacheTest):
             os.path.basename(inc_path) in self.config.parser.existing_paths[
                 os.path.dirname(inc_path)])
 
-    def test_deploy_cert_not_parsed_path(self):
+    @mock.patch('certbot_apache._internal.configurator.display_util.notify')
+    def test_deploy_cert_not_parsed_path(self, unused_mock_notify):
         # Make sure that we add include to root config for vhosts when
         # handle-sites is false
         self.config.parser.modules["ssl_module"] = None
@@ -1337,13 +1338,6 @@ class MultipleVhostsTest(util.ApacheTest):
                           self.config.enable_mod,
                           "whatever")
 
-    def test_wildcard_domain(self):
-        # pylint: disable=protected-access
-        cases = {u"*.example.org": True, b"*.x.example.org": True,
-                 u"a.example.org": False, b"a.x.example.org": False}
-        for key in cases:
-            self.assertEqual(self.config._wildcard_domain(key), cases[key])
-
     def test_choose_vhosts_wildcard(self):
         # pylint: disable=protected-access
         mock_path = "certbot_apache._internal.display_ops.select_vhost_multiple"
@@ -1357,10 +1351,10 @@ class MultipleVhostsTest(util.ApacheTest):
 
             # And the actual returned values
             self.assertEqual(len(vhs), 1)
-            self.assertTrue(vhs[0].name == "certbot.demo")
+            self.assertEqual(vhs[0].name, "certbot.demo")
             self.assertTrue(vhs[0].ssl)
 
-            self.assertFalse(vhs[0] == self.vh_truth[3])
+            self.assertNotEqual(vhs[0], self.vh_truth[3])
 
     @mock.patch("certbot_apache._internal.configurator.ApacheConfigurator.make_vhost_ssl")
     def test_choose_vhosts_wildcard_no_ssl(self, mock_makessl):
@@ -1395,7 +1389,8 @@ class MultipleVhostsTest(util.ApacheTest):
             self.assertEqual(vhs[0], self.vh_truth[7])
 
 
-    def test_deploy_cert_wildcard(self):
+    @mock.patch('certbot_apache._internal.configurator.display_util.notify')
+    def test_deploy_cert_wildcard(self, unused_mock_notify):
         # pylint: disable=protected-access
         mock_choose_vhosts = mock.MagicMock()
         mock_choose_vhosts.return_value = [self.vh_truth[7]]
@@ -1471,10 +1466,10 @@ class MultipleVhostsTest(util.ApacheTest):
         self.config.parser.aug.match = mock_match
         vhs = self.config.get_virtual_hosts()
         self.assertEqual(len(vhs), 2)
-        self.assertTrue(vhs[0] == self.vh_truth[1])
+        self.assertEqual(vhs[0], self.vh_truth[1])
         # mock_vhost should have replaced the vh_truth[0], because its filepath
         # isn't a symlink
-        self.assertTrue(vhs[1] == mock_vhost)
+        self.assertEqual(vhs[1], mock_vhost)
 
 
 class AugeasVhostsTest(util.ApacheTest):
@@ -1485,9 +1480,9 @@ class AugeasVhostsTest(util.ApacheTest):
         td = "debian_apache_2_4/augeas_vhosts"
         cr = "debian_apache_2_4/augeas_vhosts/apache2"
         vr = "debian_apache_2_4/augeas_vhosts/apache2/sites-available"
-        super(AugeasVhostsTest, self).setUp(test_dir=td,
-                                            config_root=cr,
-                                            vhost_root=vr)
+        super().setUp(test_dir=td,
+                      config_root=cr,
+                      vhost_root=vr)
 
         self.config = util.get_apache_configurator(
             self.config_path, self.vhost_path, self.config_dir,
@@ -1564,9 +1559,9 @@ class MultiVhostsTest(util.ApacheTest):
         td = "debian_apache_2_4/multi_vhosts"
         cr = "debian_apache_2_4/multi_vhosts/apache2"
         vr = "debian_apache_2_4/multi_vhosts/apache2/sites-available"
-        super(MultiVhostsTest, self).setUp(test_dir=td,
-                                            config_root=cr,
-                                            vhost_root=vr)
+        super().setUp(test_dir=td,
+                      config_root=cr,
+                      vhost_root=vr)
 
         self.config = util.get_apache_configurator(
             self.config_path, self.vhost_path,
@@ -1615,8 +1610,8 @@ class MultiVhostsTest(util.ApacheTest):
         self.assertEqual(self.config._get_new_vh_path(without_index, both),
                          with_index_2[0])
 
-    @certbot_util.patch_get_utility()
-    def test_make_vhost_ssl_with_existing_rewrite_rule(self, mock_get_utility):
+    @mock.patch("certbot_apache._internal.configurator.display_util.notify")
+    def test_make_vhost_ssl_with_existing_rewrite_rule(self, mock_notify):
         self.config.parser.modules["rewrite_module"] = None
 
         ssl_vhost = self.config.make_vhost_ssl(self.vh_truth[4])
@@ -1632,11 +1627,11 @@ class MultiVhostsTest(util.ApacheTest):
                                     "\"http://new.example.com/docs/$1\"  [R,L]")
         self.assertTrue(commented_rewrite_rule in conf_text)
         self.assertTrue(uncommented_rewrite_rule in conf_text)
-        mock_get_utility().add_message.assert_called_once_with(mock.ANY,
-                                                               mock.ANY)
+        self.assertEqual(mock_notify.call_count, 1)
+        self.assertIn("Some rewrite rules", mock_notify.call_args[0][0])
 
-    @certbot_util.patch_get_utility()
-    def test_make_vhost_ssl_with_existing_rewrite_conds(self, mock_get_utility):
+    @mock.patch("certbot_apache._internal.configurator.display_util.notify")
+    def test_make_vhost_ssl_with_existing_rewrite_conds(self, mock_notify):
         self.config.parser.modules["rewrite_module"] = None
 
         ssl_vhost = self.config.make_vhost_ssl(self.vh_truth[3])
@@ -1661,15 +1656,15 @@ class MultiVhostsTest(util.ApacheTest):
         self.assertTrue(commented_cond1 in conf_line_set)
         self.assertTrue(commented_cond2 in conf_line_set)
         self.assertTrue(commented_rewrite_rule in conf_line_set)
-        mock_get_utility().add_message.assert_called_once_with(mock.ANY,
-                                                               mock.ANY)
+        self.assertEqual(mock_notify.call_count, 1)
+        self.assertIn("Some rewrite rules", mock_notify.call_args[0][0])
 
 
 class InstallSslOptionsConfTest(util.ApacheTest):
     """Test that the options-ssl-nginx.conf file is installed and updated properly."""
 
     def setUp(self): # pylint: disable=arguments-differ
-        super(InstallSslOptionsConfTest, self).setUp()
+        super().setUp()
 
         self.config = util.get_apache_configurator(
             self.config_path, self.vhost_path, self.config_dir, self.work_dir)
@@ -1772,12 +1767,22 @@ class InstallSslOptionsConfTest(util.ApacheTest):
             AH02556: "SSLOpenSSLConfCmd %s %s" applied to %s
             OpenSSL 1.0.2g  1 Mar 2016
             """
+        # ssl_module as a DSO
         self.config.parser.modules['ssl_module'] = '/fake/path'
         with mock.patch("certbot_apache._internal.configurator."
             "ApacheConfigurator._open_module_file") as mock_omf:
             mock_omf.return_value = some_string_contents
             self.assertEqual(self.config.openssl_version(), "1.0.2g")
 
+        # ssl_module statically linked
+        self.config._openssl_version = None
+        self.config.parser.modules['ssl_module'] = None
+        self.config.options.bin = '/fake/path/to/httpd'
+        with mock.patch("certbot_apache._internal.configurator."
+            "ApacheConfigurator._open_module_file") as mock_omf:
+            mock_omf.return_value = some_string_contents
+            self.assertEqual(self.config.openssl_version(), "1.0.2g")
+
     def test_current_version(self):
         self.config.version = (2, 4, 10)
         self.config._openssl_version = '1.0.2m'
@@ -1799,12 +1804,21 @@ class InstallSslOptionsConfTest(util.ApacheTest):
             self.assertEqual(self.config.openssl_version(), None)
             self.assertTrue("Could not find ssl_module" in mock_log.call_args[0][0])
 
+        # When no ssl_module is present at all
         self.config._openssl_version = None
-        self.config.parser.modules['ssl_module'] = None
+        self.assertTrue("ssl_module" not in self.config.parser.modules)
         with mock.patch("certbot_apache._internal.configurator.logger.warning") as mock_log:
             self.assertEqual(self.config.openssl_version(), None)
             self.assertTrue("Could not find ssl_module" in mock_log.call_args[0][0])
 
+        # When ssl_module is statically linked but --apache-bin not provided
+        self.config._openssl_version = None
+        self.config.options.bin = None
+        self.config.parser.modules['ssl_module'] = None
+        with mock.patch("certbot_apache._internal.configurator.logger.warning") as mock_log:
+            self.assertEqual(self.config.openssl_version(), None)
+            self.assertTrue("ssl_module is statically linked but" in mock_log.call_args[0][0])
+
         self.config.parser.modules['ssl_module'] = "/fake/path"
         with mock.patch("certbot_apache._internal.configurator.logger.warning") as mock_log:
             # Check that correct logger.warning was printed
@@ -1822,7 +1836,7 @@ class InstallSslOptionsConfTest(util.ApacheTest):
 
     def test_open_module_file(self):
         mock_open = mock.mock_open(read_data="testing 12 3")
-        with mock.patch("six.moves.builtins.open", mock_open):
+        with mock.patch("builtins.open", mock_open):
             self.assertEqual(self.config._open_module_file("/nonsense/"), "testing 12 3")
 
 if __name__ == "__main__":

certbot-apache/tests/debian_test.py

@@ -9,6 +9,7 @@ except ImportError: # pragma: no cover
 
 from certbot import errors
 from certbot.compat import os
+from certbot.tests import util as certbot_util
 from certbot_apache._internal import apache_util
 from certbot_apache._internal import obj
 import util
@@ -20,7 +21,7 @@ class MultipleVhostsTestDebian(util.ApacheTest):
     _multiprocess_can_split_ = True
 
     def setUp(self):  # pylint: disable=arguments-differ
-        super(MultipleVhostsTestDebian, self).setUp()
+        super().setUp()
         self.config = util.get_apache_configurator(
             self.config_path, self.vhost_path, self.config_dir, self.work_dir,
             os_info="debian")
@@ -49,10 +50,11 @@ class MultipleVhostsTestDebian(util.ApacheTest):
 
     @mock.patch("certbot.util.run_script")
     @mock.patch("certbot.util.exe_exists")
-    @mock.patch("certbot_apache._internal.apache_util.subprocess.Popen")
-    def test_enable_mod(self, mock_popen, mock_exe_exists, mock_run_script):
-        mock_popen().communicate.return_value = ("Define: DUMP_RUN_CFG", "")
-        mock_popen().returncode = 0
+    @mock.patch("certbot_apache._internal.apache_util.subprocess.run")
+    def test_enable_mod(self, mock_run, mock_exe_exists, mock_run_script):
+        mock_run.return_value.stdout = "Define: DUMP_RUN_CFG"
+        mock_run.return_value.stderr = ""
+        mock_run.return_value.returncode = 0
         mock_exe_exists.return_value = True
 
         self.config.enable_mod("ssl")
@@ -67,17 +69,18 @@ class MultipleVhostsTestDebian(util.ApacheTest):
         self.config.parser.modules["ssl_module"] = None
         self.config.parser.modules["mod_ssl.c"] = None
         self.assertFalse(ssl_vhost.enabled)
-        self.config.deploy_cert(
-            "encryption-example.demo", "example/cert.pem", "example/key.pem",
-            "example/cert_chain.pem", "example/fullchain.pem")
-        self.assertTrue(ssl_vhost.enabled)
-        # Make sure that we don't error out if symlink already exists
-        ssl_vhost.enabled = False
-        self.assertFalse(ssl_vhost.enabled)
-        self.config.deploy_cert(
-            "encryption-example.demo", "example/cert.pem", "example/key.pem",
-            "example/cert_chain.pem", "example/fullchain.pem")
-        self.assertTrue(ssl_vhost.enabled)
+        with certbot_util.patch_display_util():
+            self.config.deploy_cert(
+                "encryption-example.demo", "example/cert.pem", "example/key.pem",
+                "example/cert_chain.pem", "example/fullchain.pem")
+            self.assertTrue(ssl_vhost.enabled)
+            # Make sure that we don't error out if symlink already exists
+            ssl_vhost.enabled = False
+            self.assertFalse(ssl_vhost.enabled)
+            self.config.deploy_cert(
+                "encryption-example.demo", "example/cert.pem", "example/key.pem",
+                "example/cert_chain.pem", "example/fullchain.pem")
+            self.assertTrue(ssl_vhost.enabled)
 
     def test_enable_site_failure(self):
         self.config.parser.root = "/tmp/nonexistent"
@@ -100,9 +103,10 @@ class MultipleVhostsTestDebian(util.ApacheTest):
 
         # Get the default 443 vhost
         self.config.assoc["random.demo"] = self.vh_truth[1]
-        self.config.deploy_cert(
-            "random.demo", "example/cert.pem", "example/key.pem",
-            "example/cert_chain.pem", "example/fullchain.pem")
+        with certbot_util.patch_display_util():
+            self.config.deploy_cert(
+                "random.demo", "example/cert.pem", "example/key.pem",
+                "example/cert_chain.pem", "example/fullchain.pem")
         self.config.save()
 
         # Verify ssl_module was enabled.

certbot-apache/tests/display_ops_test.py

@@ -3,8 +3,8 @@ import unittest
 
 try:
     import mock
-except ImportError: # pragma: no cover
-    from unittest import mock # type: ignore
+except ImportError:  # pragma: no cover
+    from unittest import mock  # type: ignore
 
 from certbot import errors
 from certbot.display import util as display_util
@@ -25,7 +25,7 @@ class SelectVhostMultiTest(unittest.TestCase):
     def test_select_no_input(self):
         self.assertFalse(select_vhost_multiple([]))
 
-    @certbot_util.patch_get_utility()
+    @certbot_util.patch_display_util()
     def test_select_correct(self, mock_util):
         mock_util().checklist.return_value = (
             display_util.OK, [self.vhosts[3].display_repr(),
@@ -37,12 +37,13 @@ class SelectVhostMultiTest(unittest.TestCase):
         self.assertTrue(self.vhosts[3] in vhs)
         self.assertFalse(self.vhosts[1] in vhs)
 
-    @certbot_util.patch_get_utility()
+    @certbot_util.patch_display_util()
     def test_select_cancel(self, mock_util):
         mock_util().checklist.return_value = (display_util.CANCEL, "whatever")
         vhs = select_vhost_multiple([self.vhosts[2], self.vhosts[3]])
         self.assertFalse(vhs)
 
+
 class SelectVhostTest(unittest.TestCase):
     """Tests for certbot_apache._internal.display_ops.select_vhost."""
 
@@ -56,12 +57,12 @@ class SelectVhostTest(unittest.TestCase):
         from certbot_apache._internal.display_ops import select_vhost
         return select_vhost("example.com", vhosts)
 
-    @certbot_util.patch_get_utility()
+    @certbot_util.patch_display_util()
     def test_successful_choice(self, mock_util):
         mock_util().menu.return_value = (display_util.OK, 3)
         self.assertEqual(self.vhosts[3], self._call(self.vhosts))
 
-    @certbot_util.patch_get_utility()
+    @certbot_util.patch_display_util()
     def test_noninteractive(self, mock_util):
         mock_util().menu.side_effect = errors.MissingCommandlineFlag("no vhost default")
         try:
@@ -69,7 +70,7 @@ class SelectVhostTest(unittest.TestCase):
         except errors.MissingCommandlineFlag as e:
             self.assertTrue("vhost ambiguity" in str(e))
 
-    @certbot_util.patch_get_utility()
+    @certbot_util.patch_display_util()
     def test_more_info_cancel(self, mock_util):
         mock_util().menu.side_effect = [
             (display_util.CANCEL, -1),
@@ -81,16 +82,15 @@ class SelectVhostTest(unittest.TestCase):
         self.assertEqual(self._call([]), None)
 
     @mock.patch("certbot_apache._internal.display_ops.display_util")
-    @certbot_util.patch_get_utility()
     @mock.patch("certbot_apache._internal.display_ops.logger")
-    def test_small_display(self, mock_logger, mock_util, mock_display_util):
+    def test_small_display(self, mock_logger, mock_display_util):
         mock_display_util.WIDTH = 20
-        mock_util().menu.return_value = (display_util.OK, 0)
+        mock_display_util.menu.return_value = (display_util.OK, 0)
         self._call(self.vhosts)
 
         self.assertEqual(mock_logger.debug.call_count, 1)
 
-    @certbot_util.patch_get_utility()
+    @certbot_util.patch_display_util()
     def test_multiple_names(self, mock_util):
         mock_util().menu.return_value = (display_util.OK, 5)
 

certbot-apache/tests/dualnode_test.py

@@ -412,9 +412,9 @@ class DualParserNodeTest(unittest.TestCase):  # pylint: disable=too-many-public-
                                                     ancestor=self.block,
                                                     filepath="/path/to/whatever",
                                                     metadata=self.metadata)
-        self.assertFalse(self.block == ne_block)
-        self.assertFalse(self.directive == ne_directive)
-        self.assertFalse(self.comment == ne_comment)
+        self.assertNotEqual(self.block, ne_block)
+        self.assertNotEqual(self.directive, ne_directive)
+        self.assertNotEqual(self.comment, ne_comment)
 
     def test_parsed_paths(self):
         mock_p = mock.MagicMock(return_value=['/path/file.conf',

certbot-apache/tests/entrypoint_test.py

@@ -41,7 +41,7 @@ class EntryPointTest(unittest.TestCase):
         with mock.patch("certbot.util.get_os_info") as mock_info:
             mock_info.return_value = ("nonexistent", "irrelevant")
             with mock.patch("certbot.util.get_systemd_os_like") as mock_like:
-                mock_like.return_value = ["unknonwn"]
+                mock_like.return_value = ["unknown"]
                 self.assertEqual(entrypoint.get_configurator(),
                                  configurator.ApacheConfigurator)
 

certbot-apache/tests/fedora_test.py

@@ -46,9 +46,9 @@ class FedoraRestartTest(util.ApacheTest):
         test_dir = "centos7_apache/apache"
         config_root = "centos7_apache/apache/httpd"
         vhost_root = "centos7_apache/apache/httpd/conf.d"
-        super(FedoraRestartTest, self).setUp(test_dir=test_dir,
-                                             config_root=config_root,
-                                             vhost_root=vhost_root)
+        super().setUp(test_dir=test_dir,
+                      config_root=config_root,
+                      vhost_root=vhost_root)
         self.config = util.get_apache_configurator(
             self.config_path, self.vhost_path, self.config_dir, self.work_dir,
             os_info="fedora")
@@ -90,9 +90,9 @@ class MultipleVhostsTestFedora(util.ApacheTest):
         test_dir = "centos7_apache/apache"
         config_root = "centos7_apache/apache/httpd"
         vhost_root = "centos7_apache/apache/httpd/conf.d"
-        super(MultipleVhostsTestFedora, self).setUp(test_dir=test_dir,
-                                                    config_root=config_root,
-                                                    vhost_root=vhost_root)
+        super().setUp(test_dir=test_dir,
+                      config_root=config_root,
+                      vhost_root=vhost_root)
 
         self.config = util.get_apache_configurator(
             self.config_path, self.vhost_path, self.config_dir, self.work_dir,
@@ -134,7 +134,7 @@ class MultipleVhostsTestFedora(util.ApacheTest):
         self.assertEqual(mock_get.call_count, 3)
         self.assertEqual(len(self.config.parser.modules), 4)
         self.assertEqual(len(self.config.parser.variables), 2)
-        self.assertTrue("TEST2" in self.config.parser.variables.keys())
+        self.assertTrue("TEST2" in self.config.parser.variables)
         self.assertTrue("mod_another.c" in self.config.parser.modules)
 
     @mock.patch("certbot_apache._internal.configurator.util.run_script")
@@ -172,11 +172,11 @@ class MultipleVhostsTestFedora(util.ApacheTest):
             mock_osi.return_value = ("fedora", "29")
             self.config.parser.update_runtime_variables()
 
-        self.assertTrue("mock_define" in self.config.parser.variables.keys())
-        self.assertTrue("mock_define_too" in self.config.parser.variables.keys())
-        self.assertTrue("mock_value" in self.config.parser.variables.keys())
+        self.assertTrue("mock_define" in self.config.parser.variables)
+        self.assertTrue("mock_define_too" in self.config.parser.variables)
+        self.assertTrue("mock_value" in self.config.parser.variables)
         self.assertEqual("TRUE", self.config.parser.variables["mock_value"])
-        self.assertTrue("MOCK_NOSEP" in self.config.parser.variables.keys())
+        self.assertTrue("MOCK_NOSEP" in self.config.parser.variables)
         self.assertEqual("NOSEP_VAL", self.config.parser.variables["NOSEP_TWO"])
 
     @mock.patch("certbot_apache._internal.configurator.util.run_script")